Emma asks you to play with yourself

"John, once Mason makes me cum again I'm going to need you to take a turn," Emma tells you as she bounces up and down on Mason's dick. "Let me see your dick. I want to see you start playing with yourself - get ready to fuck me hard baby."

Your dick is already hard before you pull it out.

"Oh yeah, that's what I like to see - a big hard dick that wants to fuck me!" You can hardly believe Emma is saying this to you - or that she's fucking your best friend, and thinks it's fine to have you touch yourself watching. Yet you also find yourself extremely turned on. You never thought watching Emma fuck anyone, let alone Mason would turn you on, but you find your eyes drawn to where their two bodies meet. You watch Emma's pussy lips slide up and down Mason's dick.

Watching Emma in action like this - seeing her fuck from a different angle reminds you of how sexy you always thought she was. She's as sexy as a porn star. You're so turned on from watching them fuck that you feel like you could blow your load right then and there.