Stepdaughter's slutty girlfriend invites stepmom for a pussy licking session and a cumshot on her big tits

My girlfriend\'s mom is a total slut and she\'s always begging me to come on her big, huge tits. I\'m not sure why she\'s so obsessed with it, but I guess it\'s kind of hot. So, the other day, I decided to give in and give her what she wanted.