When a guy is checking out a girl who is legitimately of age and beautiful, without her even knowing they are looking at her. Being a little bit of a creeper, but it's cool cause she's old enough.
My buddy and I were giving the Brazilian girl the sneakeye when she was showing off her tattoos and she didn't have a clue.
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.