Originally Posted by
MissFixit 
It is to trap you in one spot where others can observe you, so you will not react strongly. It is a cowardly and controlling thing for him to do.
Although, the flip works in your favor if you have news you know he won't take well.
He's done this to me several times and it makes me feel like I'm being ambushed. If he tries tomorrow night at the game I think I'll react differently than I have in the past. It use to be I would cry, but this time I don't think that will be my response. So go ahead and let him try.