An expression of dominance over another, usually delivered in a deeming respect to the recieving party. A belittling expression that equates the recipient to a weak and subservient homosexual, and sugests the party delivering the expression can do as they please. It is a vile insult. Has it's origins from the 2005 film Brokeback Mountain.
"I just teabagged your face buddy, welcome to the mountain."