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2.
An ass, typically a woman's. See booty.
That girl's got a nice plooper.
by TakesOneToKnowOne August 31, 2007
 
1.
Another word for a butthole. The term comes from the sound made by "ploop" sound made by shit hitting water.
I'm gonna stick my boot right up your plooper!
by plooper November 19, 2013