Wiktionary

penis fencing

English edit

 
English Wikipedia has an article on:
Wikipedia

Noun edit

penis fencing (uncountable)

  1. A mating behaviour in many species of flatworm, such as Pseudobiceros hancockanus, in which each creature attempts to pierce the other's epidermis with an extendable stylet and thus inseminate it.
Retrieved from "https://en.wiktionary.org/w/index.php?title=penis_fencing&oldid=44578634"