“Hey, my sister’s boyfriend—you were staring at my tits, weren’t you?” My new girlfriend’s adult sister has enormous G-cup breasts and secretly flashes them to seduce me. She even threatens to reveal that I creampied her. I know my girlfriend should come first, but I give in, lose all self-control, and let this cheerful, charming bombshell take charge as we sneak around behind her sister’s back for one creampie after another.