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1. crazy person
2. someone whacked on drugs
3. a stupid act
When Regan was president, he let all the wackos out on the street with no assistance.
by Bud E Love May 07, 2003
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Any member of the wordChurch of Scientology/word.
That wacko tried to kill me after I wrote about that SeaOrg murder!
by Blah August 08, 2003
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A female performing a good rimming on a male with his legs stretched behind his head. See also: Full Wacko, Half Wacko.
Slam my legs behind my head and give me the WACKO.
by Twils728 November 29, 2018
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Having a bat, masturbating, jerkin' the gherkin, crank the shaft, cook the cream of cock, do the rattlesnake shake, engage in hand to gland combat, give yourself a low five, five fingered friendless fandango, mashing the monster, ram the ham, slam the spam, yank the crank!
"Dude i had the best fuckin' wacko last night in the shower, i lasted a whole two minutes!"
by Alex Swain May 18, 2008
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