When pranks go too far

You know how some people propose during a ball game?

You know how one prankster sets up a marriage proposal at a ball game, except the groom-to-be doesn't know he's proposing?

You do now.

http://www.youtube.com/watch?v=WMHidjDB_Uk&feature=related

And the rebuttal.

http://www.youtube.com/watch?v=bI7AUgp5fPI&feature=related