The defensive act of reaching underneath and through one’s legs to grab the testicles of a molester (behind a person), then squeezing firmly and yanking down with tremendous force. It is said a single underyank causes immediate reverse peristalsis, while a double underyank is said to cause temporary paralysis and blindness. The dreaded triple underyank is rumored to cause immediate explosive diarrhea and permanent damage to all major organs resulting in brain damage, coma or evendeath.
Lloyd: Did ya’ hear what happened to Bud?
Doyle: No, did he lose another finger in the turbine?
Lloyd: Nope! Mac came at him, after horking down 14 White Claws and Bud spun around and gave him a double underyank.
Doyle: Sweet Jazzbo, is he dead?!
Lloyd: No, but he’s paralyzed and he needs a feeding tube to eat his beloved hominy.
Doyle: Thank the good Lord Jehovah it wasn’t a triple… he’d be a goner.
Lloyd: You’re goddamned right. Now help be with this buttress.
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.