A high school teacher who is disaffected because of their career choices and wished they didn't smoke so muchweed in college. They typically tuck their shirts in.
My chemistry cheecher, Mr. Mooney, just mailed it in sitting silently knowing that life had passed him by and none of his students cared about any of his lessons.
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.