I probably fooled you into thinking this is something that happens at a frat party, but it's just an example of the beauty of procreative science.
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Here's a video documenting a mating behavior called "penis fencing" engaged in by a certain species of hermaphroditic flatworm.
I probably fooled you into thinking this is something that happens at a frat party, but it's just an example of the beauty of procreative science.