A game related to "slug bug" and "punch buggy" and "prius poke," crappyslappy is when you slap someone you are with after seeing a crappy car (rusted, garbage bag for windows, broken taillights, etc.)
Deliberately posting inaccurate information online for the purpose of humour, with the aim of getting lots of comments and reactions from people who a) don't get the joke, or b)do get the joke but feel compelled to comment in a way that lets other people who got the joke know that they too got the joke and are thus smart, funny, sexy, handsome etc...
Oh look, Dave's just posted how Darth Vader is his favourite Star TrekCharacter because he's such a positive role model for disabled people. Looks like he's Crapfishing again.
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.