John has hit a monster flop, a pocket of A♠ K♠ on a flop of Q♣ T♦ J♥. He unfortunately got only Nancy to call his preflop bet. That isn't so bad however since she is a very aggressive player. Thus he simply checks to her. He is however surprised that she over bets at 1.5 pot. John thinks he might be lucky and that Nancy may have hit a set, so he reraises and Nancy goes all-in. Rather than a set she shows J♦ 8♦, giving John a 92% chance of winning. John's joy is however quashed as the turn and river come 3♦ 4♦ giving Nancy a flush. A bad beat for John.