I was walking across the hall to put some clothes away in my sons room. As I was walking by, and the door was slightly cracked open. I could not help myself- I decided to peak in and see what was happening. My son had his little girlfriend in his room with him. They were fooling around. She was on her hands and knees sucking his cock. I barged in and she immediately got nervous and started apologizing. I told her to stop and get back on her hands and knees. I told her to curl her tongue around the lip of his cock head. She was not doing it right so I got on my hands and knees next to her to show her how it is done. I spit on his cock and stroke his shaft up and down with my hand as I sucked his cock down my throat. It took me a couple pumps and his rock hard cock was about to explode. I grabbed the little bitch girlfriend by her hair and put her face right by his cock hole. I pumped him and that cum busted out all over her face. That’s how you suck my sweeties cock.