Some lame and stupid ppl want to catch the person they like attention so they do some very very stupid and lame action that will make them angry and fustrated.Next time when you meet 到these kind of ppl,dun be angry jus ask them to fuck off or give them eat 拳头. I hate these kind of sickening ppl.I would surely 见一个打一个and make their faces like 猪头.Once i think of them make me wanna puke. Note:i think boys do that more often. I am not saying this cos of mi being a girl.I am jus 实话实说only. Ha ha ha ha!!!