Top Definition
When your oldest sister cuts her toenails and you shove them up your urethra and then let them sauté in your urethra juice for about 4.5 hours then pee them back into your sisters mouth

Pronounced: Two - Pee - Thurr
"Me and my sis were bored so we definitely pulled a topeethur. My pee was blue from her toenail paint. It was stellar."
by Matt Markel May 20, 2008
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