Top Definition
you lay across two chairs then someone below you sticks a penis up your ass then you stick your penis on a person on top of you's ass. You must maintain constant insurtion, thus making it look like a piston of a car.
Last night George, Steve and I got two chairs and decided to Zimbabwe Piston
#piston #zimbabwe #touching #asshole #zimbabwe pistion.
by Rim Dad Toucher February 20, 2011
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