suck a cactus Share definition Flag A derogatory term use when someone is mad, as an insult. Meaning to go suck a guys dick with herpes bumps on it Bob: "You're a bitch!" Bill: "Go suck a cactus!!!!" suck a cactus by Mr Cactus Dick May 17, 2014 0 0 Get merch Get the suck a cactus mug. Buy Now — $32.95 See more merch