Any hole or object used to have intercourse (or masturbate with) that is very dry. Feels as though your penis is being harassed by a cactus. Often leads to chaffing and inevitable pain with possible blood loss.
That was one hell of a night, but her asshole is a dusty cactus.
She said to stick it in, so I did. We didn't have any lube for that Dusty Cactus. Owey
My cock is so raw that it's bleeding. Damn Dusty Cactus. I'm never doing anal again.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.