Raves are sometimes called "rafes" by people in the scene who consider the concept of a traditional rave somewhat humorous. Calling a particular event a "rafe" instead of a "rave" is a slightly sarcastic way of saying, "This isn't one of those 'goofy' raves, it's more hardcore." Hardcore, of course, can refer to any number of niche elements of a rave that can be "more hardcore." (More glowsticking, more breakdancing, more HHC, more Jungle/DnB, more PLUR, more underground, etc.)
Hey did you go to the rave last night?
YA DOOD I WAS AT DA RAFE IT WAS OFF DA HOOK YO
To get drunk when sick. Theoretically, it helps you get better because alcohol kills bacteria. Realistically, you'll probably get sicker. Who knows? Find out the hard way.
"What, you're telling me you're not gonna drink cause you have a little cough? Come on, man, tickle the fish!"