It means, Rolling on FLoor Until Stomach Hurts. It is derived from rofl or roflmao and is believed to have been first used in the Malaysian gaming community.
The reserve spurt of energy that joggers deploy when passing someone sexy, even though they're so exhausted they could throw up their own heart. Body language is transformed from flailing sweatbox to "I'm fit - and so are you, baby. Let's work out." Once safely out of sight, they fall over.
"Oh man, I was shagged out after 4miles, but she was such a hottie the ol' refleshment kicked in..."
the term used to describe the less painful shock of pain that comes shortly after u think that all the pepper spray is gone.
i got pepper sprayed today, and then i washed my face and eyes out. it burned real bad, but eventually went away. wow, was i surprised when reflash hit me and caused my entire face and eyes to burn 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.