When you are masturbating with the television on and a commercial comes on with a baby in it, effectively ruining your self-touch session and causing limpness.
During last night's episode of Roswell, I nearly cranked off to Katherine Heigl until a huggies commercialcame on and I got a limpfant.
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.