In Call of Duty: World at War, it is the act of throwing two (2) satchel charges next to each other, and also throwing a N° 74 ST (Anti-tank) grenade. The N° 74 ST will set off the satchel charges, thus having the ability to blow up a tank in one big shot if done correctly
P1: "Can someone help me, there's a tank right on me?!"
P2: "It's all right, I'm going to give it the German Bagel."
P1: "Thank god!"