An abbreviation for; There's Gay, There's Faggot, And Then There's You.
An insult typically used on Xbox One when a gamer is brought to an enraged state.
Jimmy: Lmao you fuckin suck.
Mandy: T.G.T.F.A.T.T.Y.
Jimmy: God mutherfucking damn
I'm not sure if I can make it to the meeting tonight but I will be there at the same time I don't have a car so I can get a ride to the airport on Sunday and I will be there at the same time.