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the anal sphincter, as used by Jackie Q in her hit song "Ring 'Round" in Get him to the Greek.
A ring around my rosie, my pocket's so damn cozy, and my posie, my posie, I'm talking about my asshole.
by rule3 June 21, 2010
Posie (collective noun)

A posse of gay guys; a bunch of pansies.
"he came with a huge posie"
by hughey October 22, 2005