To fall asleep randomly in the company of friends. Sometimes accompanied by snoring. Somehow retaining the ability to jump right back into the conversation.
When you get blue balls from a girl who's been teasing you, so you yell out "I'm fucking tired of this shit!" while ripping off her blouse and revealing the nipples you will then suck dry. Bonus points if this takes place in your car while parked at a church with the girl's sister in the backseat.
Dude, she got me so horny I had to do a Dirty Stollings before my balls exploded.
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.