The groom is all set to say "I do" when the bride drops a last-minute bombshell: she's pregnant, but guess what? The baby's other parent is either him or the best man. Instead of a DNA test, the guys go for the only logical solution: a game of rock-paper-scissors. The winner seals the deal the old-fashioned way. The loser protests, then just hands over the ring and walks. As the bride hits her peak, her parents crash in, welcome their new in-law, and drag him to the wedding. Because hey, the venue's paid for, might as well use it!