I was thinking something like 2 minutes fully impaled. Just something to avoid a sub going down for a second and immediately coming back up. Something to force him to accept it, and stay there a while. *evil grin* Great idea though, so maybe at some point I start a stopwatch and let him know he has one minute to get all the way down. If he takes any longer, that extra time will be tripled in the form of post orgasm torture after he cums. So if he takes 4 minutes, 3 minutes longer than I allowed, that becomes 9 minutes of post orgasm torture. And like you said, I can use the ratcheting rope to crank his balls down so he's also forced to stay balls deep on the dildo too. Maaaybe...on the vibrating dildo. ;-) Sound like good incentive to do as he's told and slide down balls deep on that dildo within a minute?