Used to describe a series of bad luck, very bad luck or an unusual bad luck moment.
The term is named after the main character of the anime & manga, Yuuko Aioi, who is constantly suffering from back luck in many unusual ways.
I had a Yuuko moment today as my cat accidentally spilled my coffee and poured it everywhere on the floor and on my desk, which stained all of my paperwork.
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.