She has a threesome with her stepfather and her grandfather

Tremendous huh? the grandmother married to the boy's grandmother and the stepfather married to his mother, but neither of them care to have sex with each other. the three boys of the family were working in the forest cutting wood for the fireplace in the face of the cold and you know, after work it's time to relax a bit. except that the way these boys relax is through sex, what an incestuous threesome they have.