Stroking his ass

You pull him even further in your mouth, while you slide a finger down until it's touching his ass.

You pull out, smiling, and you start sucking on your finger.

"Oh, fuck," Tyler says. "Please slide that finger into my ass."

You look over and Brian has his hand down his pants, staring at you. You stare back as your finger works back and gently slides up Tyler's asshole.

"Come stroke that over here, Brian. I want to get a good look while you watch your friend shoot his cum down my throat."

Brian pulls his hand out and walks over, his hardness threatening to break out of his jeans.