Top definition
A highly offensive term describing forced sexual intercourse with a cactus, specifically one of the pincushion variety. It's not very satisfying, take it from me.
Coworker #1: "Why is the boss walking so funny?"
Coworker #2: "She had a cactus horn last night..."
by Experto April 27, 2011
Get the mug
Get a cactus horn mug for your sister-in-law Larisa.