Top Definition
a dick the size of an airplane.
girl he chucked that plenis up in me and i tore my rotor cuff.
#plenis #airplane #dick #cock #dorsal fin
by Sillyconner May 28, 2008
Kind of like a penis, ya know?
Dude, what's a plenis?
#yellow #snicker #poodle #fellow #tinselton
by Gp fo' sho February 01, 2008
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