MW 2

[Tr3vor]

why is it that every time you shoot someone on multiplayer, they just throw money, or papers, or whatever that is in the air? it makes no sense, if someone got shot for real, they would not just open his wallet and throw all his cash all over the place.

[NE146]

It's not everytime. It happens when you get a payback kill bonus (+50 "payback")