Shay seems to grow more and more happy the more furiously you beg. She starts doing really marvelous things with her pussy, tensing her muscles at just the right times and places. It is other-worldly and you tell her how wonderful it is as you continue to beg.
As Shay gets happier and rewards your begging, that spurs you on to even greater depths of self-abasement and shameless begging. You say you will do anything for her, anything at all. That she just needs to say that word and you will cum, you are so teased, so close, so very teased. You carry on loudly.
Then suddenly, as you feel completely ready to burst, Shay says: "Wait!"
You nearly burst out crying, and protest loudly that you are too close.