We all know that good slaves and piggies are only allowed to cum when Goddess allows it....that is why I so graciously offer a key-holding service so you won't be tempted to stroke your little cocks without permission...
Imagine how it will feel, knowing I have your cock locked away...can't touch without permission, can't stroke, can't cum...and when I send a key to you imagine how good your release will feel after all that time locked away..
All you have to do is use the application form and send Me a nice big Tribute and I will send you a shiny new lock and keep the keys...you will be able to see the lock first and I will take great pleasure in taunting you with it...hahaha
Then we agree on a time period and a weekly or monthly key-holding fee and when you absolutely can't go any longer without release you send Me another nice big Tribute and I will send you one of the keys...easy isn't it?
you will of course lock yourself straight up again after stroking that little cock until you cum as you know it is only your Goddesses good will which allowed you this treat in the first place...
Then there will be one key left so we can have lots more fun, you're all excited now aren't you?...hahaha