Quite often at some point in a good punt, usually when her mouth is around my cock, I start thinking I must tip the girl a few extra quid at the end. God knows why when I have just handed over a small (and hard earned fortune) for her to give me exactly that service.
Some sort of madness just comes over me
Fortunately (with two exceptions) the feeling passes at the exact same moment I squirt a load and I just say thanks and move on
One exception was an Xmas bonus to a regular - she was giving me great service at a low price so I weakened. The other was in my early days when I told her to stop and get my trousers and I pulled out a note to give it to her saying she was great and deserved it. I know I was being a completely pretentious dick and I cringe at the memory.
So now I always ignore the feeling, enjoy the punt and the reward she gets is the chance to suck my cock on a return visit.