My son got injured at practice and coach called and gave me a heads up that he was on his way home filthy and dirty. So I ran a bath for him and as soon as he got in the door i brought him up to the bathroom and started undressing and bathing him. After washing his nuts and cock I found myself getting turned on as he was with such a big erection. When I got out of the tub and was on the floor getting into the cabinet I looked back and he was masturbating over me. That was it I knew it was time to let my son take this pussy and he came all over my ass.