I hate that. I try not to pre-study too many things, but sometimes I do and I find the part where the word happens. And the frequency is way up because the characters are just repeating the word back and forth to each other in a single conversation. Eugh.
One time I was pre-studying a book and FloFlo said おっぱい had a frequency of like 50+, and silly old me just laughed and was like “Yeah right, this is a kid’s book,” and trashed it.
No it was accurate.