A fictional, phoney-bologna, fake made-up song sung to the tune of the children's song, "The Farmer in the Dell".
Sung when you lift the toliet lid and find that some total asshaberedasher has left a big fat shit in the bowl and failed to flush.
♫ There's poo-poo in the head ♫
♫ There's poo-poo in the head ♫
♫ Don't forget to flush again ♫
♫ There's poo-poo in the head ♫
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.