The action in which a frag (fragment) grenade is "tagged" or stuck to another person, resulting in a hellish explosion, and flaming body parts being flung in every direction, usually followed by cursing of the fagtaged. Mostly used in the Gears of War video game.
supacog00701: ha ha got you.
Mr.locust12: Fucking noob, Fucking fagtags are fucking cheap,
burn in hell!