1. n. In a Call of Duty game, when in multiplayer all four killfeed slots are filled with the same player's name.
It is an accomplishment to be proud of.
3. v. (uncommon) to feed four animals (or humans) at the same time. Not so much to be proud of.
John: %@#! I just got a Quad-Feed twice in this game!!!
Jack: !@#!@#! I wish I could be half as cool as you!!!
Jack: Dude! I just fed my dog, my two cats, and my hamster at the same time!
John: EWWW! you still keep animals?