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a combination of the word prick and dildo. Meant as an insult.
Person one: dude ur such a prill
Person two: WTF does that mean
Person one: prick and dildo together
person two: you suck!
by MelvinEugene April 29, 2008
when you stick 4 fingers into someone's cleavage OR between their buttcheeks and wiggle your fingers.

usually one might say the actually word prill while doing this
I dare you to prill those double D's
by late-night-tv-watcher August 30, 2009
adj; see awesome.
That Zach Morris is so Prill, I wish I was that cool.
by brickhousecapital February 07, 2009