@fingrfethr - Wow! Well now I know at least one option of where I can send a hyper-ticklish sub if he's been especially bad and needs a "special" kind of punishment, maybe good behavioral correction for touching his dick without permission. Sounds like your punishments could fit that crime pretty well, driving him insane with tickle torture at a time when he wants to cum sooo badly, but is constantly reminded by you of what will happen if he does, and how much more torturous it will be right after he cums.