What biological fact about the opposite sex did you not know until recently?


ArturBear
 

Reddit
 
What biological fact about the opposite sex did you not know until recently?
Source
What biological fact about the opposite sex did you not know until recently? - My, Reddit, Askreddit, Translated by myself, Comments, Biology, Sex, Telegram (link)
Askreddit Reddit Telegram (link) Biology Comments Translated by myself Sex
v20240901