In our dimly lit kitchen, I watch my Sister-in-Law's lithe body squirm as she sucks me off, phone pressed to her ear. Her voice drips with fake sweetness, "I'll have dinner ready when you get home, honey." Meanwhile, her mouth is a hot, wet vice around my shaft, tongue flicking my tip as she swallows me whole. She's a cheating whore, and I'm her dirty secret.