Have her tell you how BIG you are

"Yeah?" You move your hips against Erin's hand, grinding your erection against her palm. "You like them big."

Erin looks at you as though to say, "Who doesn't?" but she says nothing. You think you need to encourage her a little more...

"Go on," you say, putting on a husky tone. "Tell me how big it is."

Erin doesn't miss a beat, and she's pretty good at talking dirty. "You're sooo big. God, what a massive, manly cock. I'll bet it's got to be almost 11 inches..." She gives you a turgid squeeze. "Yeah, it's going to feel so good inside of me."

Getting praised by a stupidly hot blonde is amazing.... But... was she rolling her eyes?