Sea Slug Penis Detaches...

A bizarre, hermaphrodite sea slug may give new meaning to the word "quickie." The nudibranch uses a disposable penis to have sex more frequently, according to a new study. The animal is the first discovered to use an easily regenerated, disposable penis.

When the sea creatures copulated, they unfurled part of a long penis coiled up like a fire hose inside their bodies. The creatures then simultaneously penetrated one another with their penises. The slugs then discarded the penises (or at least the extended portion of them), similar to how geckos shed their tails.