The prickly feeling you get after the hair has grown in on your scrotum after having shaved recently as the skin tightens up, especially when cold.
"Dude, after getting out of the pool, I ended up with the worst case of cactus sack. I couldn't sit down!"
Going down on a man after he has recently trimmed his pubic hair.
My man trimmed his bush last night so i treated him to a cactus sunset.
A punk who decides to pit the larges sharpest spikes on his/her jacket, then decides to hop into the mosh pit with out thinking that maybe they should just leave there jacket with there friend.
Punker 1: Dude who stabbed you?
Punker 2: That fucking cactus punk over there thrashing his elbows.
A term used for someone that is useless
Dude, this guy is being a total needless cactus
When someone hasn't recently shaved their legs so they're very prickley and you pee on them.
"hey Tim, did you hear that Johnson threatened to give her the golden cactus if she doesn't shave soon? Yeah, infront of her mom!"
The prickly, greasy, "Cactus" feeling in which booty sweat and booboo residue remain in the anus for a lengthy amount of time.
Sometimes when I work out, I end up getting Cactus ass if I don't shower right after!
When you have diarrhea that's so bad you stand up and can feel your butthole burning. Similar to having a cactus shoved up your ass.
Damn, Steve ate so much Taco Bell he blew up the toilet and is stuck with cactus ass now.