POOP - People Order Our Patties from episode "Krusty Krab Training Video" of TV show Spongebob Squarepants. The real meaning behind this naming created by the human animators is that in the sea, the burger patty is actually shit from human civilization dumped into the ocean where the fishes and sea creatures that eat Krabby Pattys are actually eating the matter of human civilization shit.
Narrator: Ah, poop! You never let us down! - "P.O.O.P." never stops falling into the ocean.
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.