Penis Fencing

 

“You ready bro?”

“Yep.”

“You remember the rules?”

“Yep. Well, kind of.”

“It’s simple. If you stab me with your penis, I’m the chick, and, if I stab you, you’re the chick.”

“Okay. And why are we doing this?” 

 


 

 

Penis fencing is a mating behavior engaged in by many species of flatworm, such as Pseudobiceros hancockanus. Species which engage in the practice are hermaphroditic; each individual has both egg-producing ovaries and sperm-producing testes.

 

The flatworms “fence” using extendable two-headed dagger-like stylets. These stylets are pointed (and in some species hooked) in order to pierce their mate’s epidermis and inject sperm into the haemocoel in an act known as intradermal hypodermic insemination, or traumatic insemination. 


Source: Wikipedia 

 

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