Die In A Grease Fire.
ORIGIN - Clan on MTG Used Die in/to X, where X was something random. One player had Die in a grease fire.
DIAGF is used as a counter to when you wish them the ultimate death.
Jerk - "Hey way to not win the game"
USER - "DIAGF"
abbreviation for the phrase Die in a Giant Fire. sometimes DIAF : die in a fire
why don't you go DIAGF IRL .....