I suppose there are lots of designations for female bits and pieces in English (as a foreigner I know only very few), but I bet none of you knows the politically correct expression:
A cervical cancer trust is under fire for disgustingly suggesting that people call vaginas “bonus holes” to avoid offending transgender people.

Funny side note: In German, one of the polite/innocent colloquial name for vagina is "Mumu", spelled exactly like the "tent gown" in the US. You can imagine my surprise when I first came across this - in a department store, where two girls were discussing their mumus. :-)