Peeking through the bedroom door shouldn’t have been this hot. But there she is—stepsister on all fours over Daddy’s couch, fingers digging into the cushions as a cock slides deep between her thighs. The angle stretches her out just right, tits bouncing with every thrust. Then she flips onto her back mid-motion—knees hooked over his shoulders—and begins to ride him like he’s late for something important. No lube needed; wet enough from watching you watch them earlier.