Forget killstreaks, vehicles and enemy players, the biggest threat in Call of Duty: Modern Warfare are office chairs, which apparently, are on a huge killing spree lately.
Call of Duty: Modern Warfare players have found an unusual and quite hilarious bug on multiplayer map St. Petrograd. On the map, you'll find various buildings that can be entered and in one of them, there's a reception area, with white glowing text and a U-shaped desk commanding a view of the lobby.
Once you find the building and the reception area, leap over the desk to find a matching set of office desk chairs. It's your random office chair, you can't miss them. As you can see from the video on Reddit , the player uses a combat knife, so make sure you have one equipped in your secondary slot.
Standard melee attack may also work but we have not tested this just yet. Anyway, once you're standing right beside the chairs, just start knifing the one on the left until the chair knifes back. Attacking the chair should get it spinning and if you do it right, you will be killed by a chair, of all the lethal things in Call of Duty: Modern Warfare.
This, of course, is not the only bug in Call of Duty: Modern Warfare but it might be the silliest one that players have encountered. Luckily, these chairs won't cause you any problems unless you strike first, so it's probably the best to keep your distance away from them.