Dad flipped up their skirts, exposing their rumps. They both leaned in and kissed each other. The sight of their twincest made my cock throb so hard it almost ripped out of my pants. I sucked in breaths, my blood on fire.

Dad's hands drew back and smacked down on both of them.

CRACK! --ACK!

The sounds nearly overlapped. Both of them moaned into their forbidden kiss, their tongues dancing as more pussy cream dripping down their thighs.

"Fuck, that's hot," groaned Dad. "Two twin sluts to play with!"

CRACK! --ACK!

"Which one do you want to fuck, son?" Dad glanced at me as he drew off his shirt.

"Um,...