Peyote, San Pedro, or other Mescaline-containing psychoactive cacti.
"I have some cactus. Let's trip"
by junkyman420 March 13, 2004
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1.n. a plant in desert regions

2.n. another word for prick
jagoff#1 hey i like to fuck 5 year olds dammit!!!!!!!!!!!!
jagoff#2 what a cactus!
by shitmeister2000 October 20, 2006
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The process of shaving the nutbag and letting the stubble grow back for 4-7 days then teabagging somebody.
Are those chapped lips, or did u get the cactus?
by AssFart January 14, 2005
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Someone who gets alot of pussy, but is still thirsty for some reason.
"Yooo I need to get some bro!"

"Nigga you just had sex like a day ago.."

"I knowwww but Im still fuckin thirsty!"

"You a cactus ass nigga.."
by KenjiMishima June 23, 2014
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Something you dont want to put up your butt.
Person 1: yo want my dick
person 2: no thats cactus.
by LizardBoi January 17, 2016
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At a bar:
Girl: You think you can get me drink?

Guy: I can't! The guy at the counter's not letting me! He's such a Cactus!
by MCRainbowSupernova8196 December 30, 2020
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