cactus punch

placing a section of PVC pipe in someone's butt, then sticking barbed wire into the butt via PVC pipe. initially, the barbed wire is contained within the PVC pipe. you then remove the PVC pipe, leaving the butt free to clamp down around the barbed wire. many people use this as stimulation before, during, or after sex.

The act of shaving your nether regions too far in advance of engaging in sexual intercourse; this results in a 5 o'clock shadow causing the sexual partner to feel as if they are being punched in the genitals by a cactus.