That's enough. Go back to stroking, and naturally don't cum. Don't even edge. You can go whatever wanky speed you like, but if you feel yourself getting close, I want you to sloooow down.
I'm all spread out on the couch for you. While you wank, I want you to imagine pulling my frilly panties aside and thrusting your big, hard, throbbing cock deep inside me. Imagine these luscious tits bouncing as you fuck me.
Careful now! Does my naughty little boy have control problems? Does my little cutie have trouble holding back? Yes you do. Better take those hands off and take a time out.