(Noun) The state of having the specific length of stubble on your legs that actually causes you or someone else physical discomfort.
OMG, my cactus pants are killing me. I'm going to put on some sweats so I don't poke myself in my sleep.
by Pepper Lover July 16, 2016
Refers to the condition of a man's testicles 5 days or so after shaving them. Round and prickly, the Pant Cactus is a foe to one's comfort, inner thighs, and the ladies. See: Manscape
"I look like a perv because I have to keep adjusting my balls - this Pant Cactus is so damn prickly! I'm never shaving my balls again!"
by Regay January 10, 2010