Yup, the whole Call of Duty series got pretty stale for my friend and I since it was too easy just playing normally, so we started doing stupid shit like that, running around with knives only, suicide bombing people, etc... 2v2 matches were probably the most fun thing for us back in Modern Warfare 3, we'd constantly do stupid things like that and the other team would ragequit because they'd still lose pretty badly. My favorite thing then was when we'd run around with magnums only, I just love those sidearms.