I have been trolled online many, many, many times. I've probably been more trolled than most. This is probably due to me being the ultra troll. That is, pissing people off without trying, or even being aware of it, and usually without doing anything actually bad. Most of the time I just think it's funny when people troll me, and the troll inside me is giddy for the attention, and that the trolls trolling me were originally trolled by me... if that makes any sense.
As for being trolled while playing an online game, umm... I don't think so, but I would probably think that's funny, too.