When someone tries to fight you or get on your case. They willask you if your posting a fweek? Usually used amongst high school boys who have nothing else to do all day.
Rodney is posting a fweek on Sid. Sid had eaten all the Twinkies.
A 1337er form of feces. (Soon to be) used by noobs who try not to conform to the proper English language. Used instead of saying "shit", after a disappointing event occurs.