はらのこが むねなでおろす ひろうえん
My interpretation is that this is a 出来ちゃった結婚, and the idea is the unborn baby can relax now because they’ve made it to the wedding reception and the parents are thus safely married.
unborn kid can / finally relax / wedding banquet
Yes, the core of @pm215 's characterization is also what came to mind after I read the meaning of 胸を撫で下ろす…
Having read your hint and his version, I’ll pass on translating this one.
- 腹の子が胸なでおろす披露宴
はらのこが・むねなでおろす・ひろうえん
unborn kid can / finally relax / wedding banquet
to @pm215
Thanks for helping me figure this out! 腹の子 had me confused. I think @pm215 nailed it: “The idea is the unborn baby can relax now because they’ve made it to the wedding reception and the parents are thus safely married”.
Volume: Intense
- 株下がり何故かうれしいわたしたち
Hmm. I feel like I should understand this one, having worked at so many startups. I think I get it, or at least I have an interpretation from my own experience that makes sense, but I’m not 100% sure it’s what the author intended.
I’ve worked at companies where I felt the leadership was driving a company I cared about off a cliff. It was easy for them to ignore employees comments and concerns while the stock was flying high. It never ceased to amaze me how many VCs, board members, and silly-con valley executives would attribute all successes to their own genius, but negative results were, of course, inevitably due to the actions and ideas of others.
I’m embarrassed to admit I had to use a dictionary even though I ostensibly already “knew” all these characters. For some reason, 株 on it’s lonesome looked unfamiliar (I’d have recognized it instantly in 株式会社, for example).
Remember to please use the spoiler tag with your translation attempts! Also, please include the reading in kana with your submission.
Everyone is encouraged to participate, no matter your level!
Online tools like dictionaries, sentence databases, and even AI translation engines are fair game and can be extremely helpful. Yomichan is particularly handy if you use the Chrome or Firefox browser. The 語源由来辞典 is also an excellent resource for researching the etymology of various words and expressions.
Here are the links to the 356 Japanese originals (spoiler free) and to the the spreadsheet with all the upcoming senryu as well as the translations to date.
株下がり何故かうれしいわたしたち
stocks are down.
for some reason, we’re
all happy
Somehow your wording made me think of another possible interpretation:
Maybe it’s just that many people aren’t heavily invested in the stock market, so the ups and downs don’t affect their happiness.
I’m curious if you had this or a different interpretation.
I didn’t have exactly that specific interpretation, but my first thought was millennials hating the stock market, and occasionally rooting for the demise of hated companies. I’ve certainly felt that way before 
.
It reminded me a bit of this.
I do think that regardless of specifics, it seems to be someone who either has nothing invested in stocks or who has very little invested (like someone who works at the company in question and isn’t terribly fond of their job), and who feels a sense of relief or validation somehow at seeing the stocks fall, coupled with the solidarity implied by わたしたち.
かぶさがり なぜかうれしい わたしたち
2-3-2 (やった!)
Puzzling -
down stock makes
us glad
A bit clumsy, but the pull of writing a 2-3-2 was too strong.
The reason for their happiness is not clear though, as there are many reasons to rejoice falling stocks such as buying into the market, options trading, schadenfreude, and so on. But, these are technical, trading driven reasons. I suspect the writer was alluding to a basic human reaction to falling stocks in this 川柳, which eludes me.
Amen to that. One reason why I grew disillusioned with high-tech companies. The egos and behavior of the people at the top of high-tech, startup companies and their sense of righteousness towards others started to grate on me midway in my career. It made foolish-me snap out of the belief of solving world hunger through tech. 
Ah, yes, this is more along the lines of a rationale for this 川柳, rather than technical, stock trading, behavioral reactions that I thought of.
- 株下がり何故かうれしいわたしたち
Kana: ぶかさがりなぜかうれしいわたしたち
Translation attempt:
The stocks dipping
Had us overjoyed
For some reason
I think the interpretation that this is from the POV of someone who is not particularly invested is interesting, though in my translation attempt I went for a direct link between both halves of the 川柳. Either way, I don’t necessarily see an argument for or against either version in the text itself. 
- 株下がり何故かうれしいわたしたち
かぶさがり・なぜかうれしい・わたしたち
stocks are down. / for some reason, we’re / all happy
Notes:
Tough call, but goes to @fallynleaf (most votes)
to @LaVieQ and @valvictorine
I tend to agree with the consensus: this appears to be from the viewpoint of someone emotionally uninvested in stocks (whether monetarily or not). It doesn’t say why they’re happy, but it may simply be wry commentary that stock prices don’t (or shouldn’t) always affect happiness.
Volume: Intense
- 離婚後も同居続けるへんな仲
Interesting: this one does not appear to have any sort of hidden interpretation below the surface, and seems to just state the meaning directly. At least it seems pretty direct to me. Prove me wrong!
Remember to please use the spoiler tag with your translation attempts! Also, please include the reading in kana with your submission.
Everyone is encouraged to participate, no matter your level!
Online tools like dictionaries, sentence databases, and even AI translation engines are fair game and can be extremely helpful. Yomichan is particularly handy if you use the Chrome or Firefox browser. The 語源由来辞典 is also an excellent resource for researching the etymology of various words and expressions.
Here are the links to the 356 Japanese originals (spoiler free) and to the the spreadsheet with all the upcoming senryu as well as the translations to date.
I came up with a 4-5-4:
- 離婚後も同居続けるへんな仲
りこんごも・どうきょつづける・へんななか
Post divorce and
cohabiting, odd
relationship
りこんごも どうきょつづける へんななか
4-5-4
Cohabiting
after divorce! Strange
relationship!!
Apparently happens a lot these days. There was even a long article about it recently. (Search for “Separated but under the same roof” in NY Times.) Still, it is an unusual arrangement.
離婚後も同居続けるへんな仲
divorced but still
living together.
odd dynamic
- 離婚後も同居続けるへんな仲
りこんごも・どうきょつづける・へんななか
Post divorce and / cohabiting. Strange / relationship!
Notes:
@LaVieQ and I came up with similar translations. I kind of mushed them together. As discussed, I like to keep these as close to the original as possible, so “and” rather than “but” (for the も) and “post divorce” for 離婚後.
Volume: Salaryman
- 「ありがとう」 そのひとことが 潤滑油
Again this seems to have the meaning right on the surface.
I doubt anyone will need them, but just in case, here are some hints:
I’m pretty sure it’s 一言, but I don’t think there is any particular reason for writing it in hiragana.
This dictionary example seems to explain the meaning of the final term quite well:
・労使間の潤滑油の働きをする smooth relations [reduce friction] between labor and management.
Remember to please use the spoiler tag with your translation attempts! Also, please include the reading in kana with your submission.
Everyone is encouraged to participate, no matter your level!
Online tools like dictionaries, sentence databases, and even AI translation engines are fair game and can be extremely helpful. Yomichan is particularly handy if you use the Chrome or Firefox browser. The 語源由来辞典 is also an excellent resource for researching the etymology of various words and expressions.
Here are the links to the 356 Japanese originals (spoiler free) and to the the spreadsheet with all the upcoming senryu as well as the translations to date.
Yet both of your translations left out 続ける .
も is a tricky one. Yomichan doesn’t even define it as “and” or “but”, haha, because the meaning seems to be closer to “also,” “too,” “in addition,” etc. In my opinion, both “and” and “but” convey that both of the things are occurring, but “but” feels a little more natural for the translation into English because “post-divorce” and “living together” are qualities that seemingly contrast with each other (like in the phrase “Separated but under the same roof” in the NY Times article that LaVieQ mentioned).
Maybe I’m wrong, though .
Fair point.
While your “still living together” is more direct, “cohabiting” still seems a reasonably concise translation of “continuing to live together” (同居続ける).
You’re definitely right that when a noun is followed by も, it mostly means “also” or “either” (see Particle も: Addition Marker). I was thinking of “and” as in “and also living together” where the “also” is somewhat redundant.
If the author wasn’t under 音 count constraints, they might have chosen to use ですが or something similar, but because they didn’t it feels ever so slightly off to translate も as “but” here. (Just my opinion, of course.)
Lastly, though, I think you’d agree that “relationship” for 仲 is more direct than “dynamic”.
Anyway, yours was a fine translation but ultimately I decided to go with the mashup.
Yes, my translation was not very good, but it seems a bit arbitrary which words you care about being direct/left in, and which ones you don’t
THAT’s a fair cop. 
Ultimately I don’t think we can always have universal agreement: ultimately I have to make a call.
(And there is nothing wrong with your translation!)