A term used in call of duty 4 commonly referring to killing someone by hitting them in the face (although it can be anywhere really) with a stun grenade. commonly referred to as "Pegged" or "Thudded" for short. This act is usually follow by vulgar insults.
Player1 "Oh noob you just got stun pegged to the DOME!!!"
Player2 "WTF HACKER. I WATCH KILLCAM. THAT IS IMPOSSIBLE WITHOUT HAX YOU %#@$@"