Sure, traditionally on your birthday you expect to be celebrated and showered with gifts. But having a cake explode in your face is a close second, right?
That's what happened to this poor guy, whose friends covered an airbag with layers of frosting and then blew it up right when he went in to blow out the candle. Obviously, this sent frosting pretty much everywhere. The most surprising thing may be the guy's reaction, however, or lack thereof. Maybe he's used to this sort of thing? Maybe next year you should ask for new friends for your birthday, bro.