"Get your balls nice and lubed up, I think they deserve some well earned attention! After all, without them you wouldn't be able to make and store up all that cum.
Play with your balls for at least 3 minutes, but you musn't touch your cock during this time. I want you to get down on your knees and beg me to let you touch it again - see if you can come up with any convincing reasons as to why I should."