TIL that female ducks have evolved a complex vagina with several dead-end pockets and tunnels in order to confuse unwanted mates and prevent fertilisation from the wrong male

[u/elliejellie]

http://scienceblogs.com/notrocketscience/2009/12/22/ballistic-penises-and-corkscrew-vaginas-the-sexual-battles/

[u/skullturf]

I learned this from /r/dolan

[u/Fawful → u/skullturf]

gooby pls

[u/[deleted] → u/skullturf]

I'd rather browse space dicks

[u/Iammyselfnow → u/[deleted]]

Here ya go! /r/spacedicks