The post above reminds me of a client I used to see every few weeks who always booked 30minutes but exploded within a few minutes. The first couple of visits I asked him if he'd like a second one but he had already settled back and started chatting and said he's a once only man. I didn't offer 15 mins bookings so as he seemed quite happy with his 20min chat why would I complain 😊. I wish he was still around now! He always checked his watch though and left precisely on his half hour being done.
A couple of my regs are ready to go within a minute of first cum and manage to have two in a half hour easily.