Ballistic Twirl

I read in a book once that bird penises remain inside bird bodies, except during sexual intercourse, for aerodynamic purposes. I've never had reason to doubt this, but after seeing this possibly NSFW video, my belief in the concept is cemented:

"Ballistic Penis" - not just a good band name, it's a real thing!

Oh. My. God. Did you see that?! It's twirly! I never stopped to think about what a duck's penis would look like, because...well, I don't think about ducks that way. But never, in my wildest dreams, would I have guessed a duck penis would be huge and twirly. Or ballistic!

The penises have to be to be huge and twirly because duck vaginas are - get this - deep and twirly! This deep, twirly, highly muscled vagina evolved to help the mama duck control who would be papa to her ducklings. If she's excited about a duck, she will loosen her muscles and essentially guide him down the long and winding road. If she's not interested, she can clamp down and keep him out in the cold.

Ducks have rape-proof vaginas. Now that is smart. Go evolution.

A more detailed explanation can be found here and here. And many thanks to my sister's amoureux for sending me an article that will forever make Howard the Duck even MORE creepy!

kinky, indeed