Acronym standing for "Random Acronyms For The Win." Used after a string of other acronyms, especially if the user seems to be throwing them in randomly.
OMG I am ROTFLMAO at your lulzy jokes. You've got to STFU b4 I bust a nut. Also, RAFTW.
Variant on the word "awesome" and a play on the more popular "ZOMG". Generally used sarcastically to illustrate that something is not actually awesome, in the same way that 1337speak is not actually cool.
ZOMG, this diarrhea is zawesome! I hope I have it all week.