A Silliest Goofer isn't a thing. it is a person. a person named Plusho. a pretty stupid one the least but still a fun one. The Silliest Goofer is a strange creture that loves Arson and chaos. nobody knows why. The Silliest Goofer just exist.
Person1: hey what is a silliestgoofer?
person2: Plusho
person1: Who is tha-
Person2: PLUSHO.
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.