A pharse satnding for "what the fuck, man?" Usually used when an individual is intoxicated and his friends are talking to him. It tells your friends that you are to intoxicated to follow what they are saying.
Jay: Hey, wanna go get something to eat, Dennys, Mc donalds?
Jack: ......wtf man......?
Jay: Oh...never mind then...
A simile/idiom similar in meaning to "one man's trash is another man's treasure" only, in this case, it means that what is funny to one person may be offensive to someone else.
Tom: "Man, I told this hilarious joke last night. Everyone laughed but Bob. He was a douche and said the joke was offensive."
Dick: "Don't worry about it, dude. One man's LOL is another man's WTF?"
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)