It's your sister's birthday, and your mom (Parker Swayze) wants you to fuck your sister (Bambi Brooks)
They take turns sucking cock on the bed.
Bambi starts riding cowgirl, before Parker takes over.
Some cock sucking in between penetrations
Doggy, here Bambi is on top of Parker, so switching between the vaginas.
Ends in a missionary creampie/cum on pussy for Parker.