You were his best man at their wedding, and you'd do anything for him. Anything but keep your cock in your pants when his wife flirts with you, that is! She knows your cock is bigger than his, but has no idea HOW much bigger until she's on her knees and you pull that monster out of your pants and slip it down her throat. Sucking your cock gets her really wet and she begs you to fuck her pussy until you pump her full of cum