For the ones who have already popped I stop when their paid time is up.  For those that haven't and don't want a shower afterwards I will give another five minutes, but no longer.  Guys should know their own bodies and if they know they ain't gonna cum in the allotted time should make a longer booking.

If the guy has already cum once then I will call time when the time is up. He had a shot and another one is just a bonus. If they have not cum and Ive seen them before then Ill maybe give an extra 5 minutes. If not then time is time. If they need longer I ask them if they wish to extend. If a guy hasn't cum though and time is up but he is on the verge then I will keep going for a few minutes or just ask them if the want to wank on my face or my boobs or watch me play with myself, if that doenst do the trick then its a lost cause if they dont want to pay the extra to extend further. They know how long it will take them to cum and how long it will take them to cum a second time. If its flaccid then its not going to suddenly spring to life in the last minutes of the booking, flaccid is flaccid and if its been sucked, wanted, tossed, licked, jerked, and sucked again and its still limp then no, Im not going to run over time in the hope that a miracle occurs.