Finally, she relents, and you sit there, panting in relief. She chuckles.
"Oh I'm not done with you just yet!"
With that she takes a piece of rope from her bag, and ties it around the base of your cock and around your balls.
"Hopefully this little makeshift cock-ring will help you grow a bit more. It'll definitely make you more sensitive *wink*. Just lie there like a good little boy and watch me, and let's wit for it to turn purple, haha"
(tie your cock and balls)