She starts to touch his cock

The kissing soon stops and Christy gets down on her knees. She takes Rob's big dick in her hand and slowly begins to stroke it. Rob's penis size was already apparent from the start, clearly a larger cock than yours which was now being tugged on by your girlfriend. She put two hands on it and so much of his cock was still seen. It turns both of you on seeing how much bigger the guy is.

"So I've got a bigger dick than that pussy?" Rob says while letting out a laugh.

"Hey, listen here, my boyfriend is not a pussy!" Christy responds.

Rob steps away from you girlfriend and her hands.

"If you want this dick, you better talk shit about that loser."

"W-what?"

"C'mon, Christy. I know you want this man meat."

She hesitates a little bit, much to your surprise, before finally complying with your high school bully's request.

Christy starts to speak in a hushed and quiet whisper: "John has a..."

"Come on, you have to be louder than that."

"John has a t-..."

"He has a?"

Finally, Christy gives in and yells out "John has a TINY DICK, not a tree trunk like yours, Rob! I want to WORSHIP your BIG DICK, not John's LITTLE PUSSY DICK!"

"Now that's more like it" Rob responds.

Rob starts to bring his dick closer to Christy's mouth.