The act of one's rectum muscles relaxing so completely that feces flows out without any effort or control devastating all in its path like an avalanche.
ohhhh bro after eating that taco I was hit with a series of shavalanches all night long.
When Sav busts a load on your face and you fall asleep with it on. Then the nextmorning you realize it was Sav's jiz on your face, so you leave it on for the rest of the day for the world to see.
Half of Connecticut's female population is currently walkin around with a savalanche.
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.