Top definition
If you want to be really tricky, instead of saying P base three you can curveball it by saying P base four minus one. A P3 was originaly an unfinished drawing of a penis, but now has come to mean penis.
I started drawing a penis on my friend's homework but I only managed a p base four minus one.

"Quit grabbing your P base four minus one in public, Mark, it's impolite."
by The Horned Water January 25, 2005
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