If you've got BoFH, then you might want to include the companion (although slightly less common) acronym: PFY (Pimply-faced Youth). My personal favorite was from a friend of mine in a chatroom many many years ago: ROTFLMAOWHCIROTFATATST (Rolling On The Floor Laughing My Arse Off - Wait How Can I Roll On The Floor And Type At The Same Time? :-)
"Ex libris un peut de tout"