Well, not me personally. But it turns out there is a species of sea slug that has a detachable penis. Chromodoris reticulata is a simultaneous hermaphrodite meaning it has male and female sex organs and can use them both at the same time (I imagine that makes it really hard to figure out who is on top). So when these sea slugs mate, they both give and receive sperm at the same time. After mating, they just leave their penises, possibly because barbs on the penis make them difficult to pull out. But that's okay, because it's got a lot more penis inside of it and it just pops out another one within a day.
In case you are wondering, I have already nominated this for an IgNobel Prize.
Walker's week ahead: Connecticut, New York City, Iowa
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