When they start throwing things at the back of your head. I stood up, said if they did it again I would batter them and they never did it again. Of course I am 6'3 and built like a brick ****house so that may have had something to do with it.
Beggers belief why they'd do it in the first place. Perhaps they were doing reconnaissance. And who said CoD isn't beneficial to us "youfs" today.