with a previous airline a cc member was given a hard time by a pax for the entire flight of 4 hours. after one particularly snide comment the hostie in question (a large south african bloke) went to the pax and quietly said "why dont you just f
k off"
the pax replied "I cant beleve you just said that"
"no, and nobody else will ether"
as far as i know he got away with it
the sort of trick you only get away with once