You talked your bratty stepsister into having a spend-the-night party. You'd do anything to get closer to her. You’re so desperately horny for her. You decide to play Truth or Dare, and things get heated quickly. Like the brat that she is, she loves making you uncomfortable. Before you know what's happening, she's topless and demanding that you cum on her perfectly smooth armpits. You swear she said that next time you two will fuck, but surely you just heard wrong.