I swallowed hard knowing this could get very dangerous with Kristy just upstairs and my weakness for my son's cock.

"Ok Gina, maybe you shouldn't do this..." I whispered still looking at Tommy's growing erection.

"Why? He likes it."

Tommy was completely hard now and his breathing was coming in labored. His big cock was visibly making an outline in his shorts and Gina managed to tug on his shorts a bit slightly exposing the head of my son's cock from under the waistband. I swallowed hard and gave her a pleading look.

"Please stop."

She just smiled and tugged on his shorts more. I looked down and saw Tommy's...