Top Definition
An awesome way to describe urination or masturbation..

Or all the above at the same time
Student: Excuse me sir, but I gotta go shake the cactus
Teacher: OK, be back before the lesson starts

Friend 1: Man, she's so hot, I might just go shake the cactus
Friend 2: YES
by CactusShaker9000 January 06, 2012

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