piss humping

I looked at a strobe light and started piss humping myself
by Jamie Mosshart August 24, 2010
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Piss Humping

When you need to piss really badly you start moving your legs and it looks like you are rapidly humping the air.
Person 1: You ok there mate?
Person 2: No I'm bursting for a piss.
Person 1: Stop Piss Humping. You're humiliating.
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