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1.
a ghost; it has the ability everywhere and nowhere at the same time. it appears only to dissapear. commonly hides in bushes, bathroom stalls, outside of windows, and in the rarest form, under a sheet. graduate of ninja school.
i went to fix my wall locker and i was attacked by a plamondon

last night a plamondon mounted my mom
by AH121 September 09, 2010
 
2.
A polite term for a penis, cock, dick, wang, weapon, johnson, etc. Also known as "Plam" for short.
He likes to take out his plamondon and stroke it.
He tried to hide his plamondon's erection.
by eCNO November 22, 2004