Penis worm

Slang term for "priapulid" (phylum or class Priapulida), any of some 15 species of predatory, marine, mud-inhabiting, unsegmented worms of uncertain classification.

"Finally, there is a type of worm called the priapulid worm or penis worm, named such for its nose-like end which can be stretched or protruded, thus resulting in it looking like a penis."

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