A cake like sweet that has copious amounts of chocolate in it, and something else. Normally, the "something else" is weed.
Fred: "Hey, Shaggy?"
Shaggy: "Yes?"
Fred:"Can I have one of your special brownies?"
Shaggy: "Sure."
Fred: *munches it*
Also Fred:*starts sweating*
Fred again: "Shaggy this isn't weed"
You know those brownies your room mate made for you after you ate all their food? How you devoured them? How you now can't get off the toilet? Exactly.
*sights special brownies* *Nom* *gurgle* *runs to bathroom* *not seen again for three days*
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.