T-Rex: Turbellaria flatworms are hermaphroditic, with viable male AND female sex organs!

T-Rex: Pretty great, I know!

T-Rex: But because of this, when it comes to reproduction, who's gonna be the mother is up for debate. And it turns out that being pregnant is hard work! So these worms FIGHT IT OUT, and by "FIGHT IT OUT" I mean they pull out their dagger-like penises and each try to stab sperm through the other's flesh.

Utahraptor: The loser gets pregnant first?
T-Rex: The loser gets pregnant first!

T-Rex: And it's called "penis fencing". Utahraptor, I can't get enough.
Utahraptor: In another reality, you could've had a PhD in penis fencing.
T-Rex: Frig, man! A sentence like that could make a fella feel like he's made some bad decisions!

Narrator: MEANWHILE, IN ANOTHER REALITY:
T-Rex: Dromiceiomimus, it's called "penis fencing"! In another reality, I could have a PhD in penis fencing.
Off panel: But you do, T-Rex!
T-Rex: UM OBVIOUSLY I MEANT A BETTER DEGREE FROM A MORE RESPECTABLE SCHOOL.