A man meets a woman with two children some years later the woman dies,and the man is a dirty old man.
One weekend the daughter asks to use the car,the dad says "sure if you suck my dick." at first shes very hesitant but she really wants to use the car. so she figures whatever it takes to make it happen.
so while shes down there she notices a fowl oder so she says to him "it smells like shit". he said "ohhhh thats right your brother has the car tonight."