A symbol for a heart. Usually used when you type it in the space bar of the computer because you are lonely. Or used when texting that special someone. ; ) .... or when texting your mom because again you're lonely... or just really love your mom... or your mom is cool enough to understand internet slang... ANYWAY <3 means heart
You; "Hey babe <3"
Also you; "Wait I'm lonely, OKAY NEVER MIND"
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.