Frank didn't need to say anything else, he grabbed his shorts and dropped them to the floor, then wrapping his hand round his cock he took a few steps forward, stood in front of me and immediately started to jerk himself. I was trying to be cool. What a stupid idea! The very thought of remaining or even appearing cool when my son was openly masturbating in front of me and trying his best to spray me with his spunk was ridiculous. I let my emotions go and started to lightly rub my pussy in front of him. This caused Frank to groan in excitement and I could see he...