You have reached the peak of boredom to where you have already pressed all the symbols to forward to backward, backward to forward, so now you press every character three times back to forwards. (Stop procrastinating, you have 10 assignments due. Like, how did you get so bored to get here?)
Acronym for Laughing Like a Little Girl. (Pronounciation: Lul-guh) Usually the unexpectedness and awkwardness of the laughing will, in turn, cause others to also burst out laughing. The effectiveness of this effect increases effectively by factors such as, but not limited to, the person being a guy, the person literally rofling along with the lllg, or the person having trouble breathing due to the long laughter. Lllging is also a major contributor of laughing hickups.
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.