They're great when you're young ("when I grow up, I'm gunna be...")
But then become a pain in the arse when you're like 48 ("you're nearly fifty! WAHAHAHA!").
word that "rebels" usually use when they dislike something, often used in place of normal cuss words. can also be used as a random expression like oh shizznitz, holy pancakes batman, gosh bewinkers (not sure of the spelling of that one), golly, oh eff or just plain FUCK. can be used frequently around adults or parentals that are strict about our youth cussing them out. use it as yu will
eff yu, yu effing effer; go eff yurself; effing effs; oh em eff gee; why dont yu go eff yurself, man; why eff not?!; eff myspace; eff yu!!; yu stepped on my cat yu effer!; go suck on a turd, eff...; she wasnt THAT effing ugly in real-life; EFF