My husband's younger brother Susumu stops by for the first time in ages while running an errand nearby. He and I were classmates, so we have known each other for years, and seeing him always makes me want to tease him. As the three of us chat, I secretly rub his crotch with my foot and savor the danger of my husband noticing. Susumu tries to escape to the bathroom before we are caught, but I follow him and wrap my lips around his cock. He gets through that day undetected and breathes a sigh of relief, but...