The overcompensation for having a smaller dick by being an even bigger one.
"I think that rude prick with the obnoxiously oversized truck suffers from penisitis."
by tah-dard! September 26, 2011
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1. rule or domination by a the person with the largest penis.

2. a political system, state, etc. dominated by the person with the largest penis.

3. a way of determining order by the size of the penis of the participants.
Allan: So, who gets to go first ?
Bob: Definitely me, by right of penisism.
Allan: Huh ?
Bob: My penis is way bigger than yours Allan.
Allan: ...
by Ragnarok7000 October 29, 2009
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The act of inserting your penis.
"So I was penising my girlfriend the other day..."

"We weren't quite penising yet, so it was okay for me to take the call from my mother."
by Charles La Dank October 10, 2013
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Sexual intercourse involving the use of a penis. Not a fake penis, but a real penis possesed by a male of the species. e.g. a lesbian cannot "penis" another lesbian.
Dude, wookie totally penised lyzzi last night.
by Fianslip March 19, 2006
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adjective
1 the ability to be penised, to be inflicted by penising: dicked, wanged, cocked.
Justin, as a gay man, is penisable.
by Mexico 66 October 21, 2010
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(noun) the plural term for penis; multiple penis; group of penis
i will turn all of my ex boyfriends penises into penWAS's
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