Did you know that cats have sharp barbs on their penises, or that duck dicks are corkscrew shaped? Answer: no, you didn’t. But now you do, not only because I just told you but because you’re going to watch this video and realize how lucky you are to not be a flatworm, since that would mean that you’d have both male and female genitalia and that you’d have to fight other flatworms with your junk until one of you wound up pregnant.
What a hassle.