Voices?

You hear faint voices outside the door. You press your ear against the door and listen

"oh fuck Brittany! You're the fucking greatest at that!" Keri yelled out as she moaned in pleasure. You're pretty pissed off that she skipped school but you slowly open the door and peek inside.

Keri is lying on the bed with a girl (Brittany you assume) kneeling off the bed wearing a tiny skimpy schoolgirl outfit with her panties facing you and her head between your daughters legs. You know you shouldn't be watching and you should stop it right there and then but your dick gets the better of you and feel it tent up in your pants.

YOu move yourself to get a better angle and you see Brittany licking Keri's....