My son and I did this to my wife. I was inside of her first and then he mounted her. I felt his cock slide in and rub against my penis. My wife moaned and I had to grip her tightly cuz I felt my cum starting to race thru my body and I also came too soon. Our faces were so close to one another so we all stuck our tongues out and licked each other. Then we started pumping inside my wife and we came together. My wife was so full of our cum!
