At the beginning of the punt before asking for a shower usually.
Albeit this does set off a memory of rather nice punt I had must be over ten years ago when I was a mid to late twenties more athletic man. I booked this new girl for an hour in Hove, EE around the age of Twenty and offered all services. According to the madame she was new to Escorting and I was her first punt (considering what happened that might well be true.
The Madame ushered me into the flat took me to a bright bedroom and then the girl was sent in, she was utterly gorgeous with that nice student look about her. She looked much like the porn star Gina Gerson http://www.xnxx.com/pornstar/gina-gerson
Well she sized me up smiled and before I could say anything she came up to me and started to passionately tongues and all start to DFK me. Then she nelt down pulled open my flies and started to give me a lovely wet OWO for about a minute. She then stood up gave me another kiss and asked for the money and if I would like to freshen up. I hadn't said a word up to that point!
Well once I had paid, showered and returned she took me onto the bed for another OWO blowjob, fuck in all positions with kissing followed by another blowjob finishing with CIM and swallow!
WOW! I am getting hard now just thinking about it!
I saw her again a couple months later at a different parlour, whilst the same services were on offer it was payment upfront as is normal. I guess the other working girls explained the details of the order of such things! She was also a bit more jaded, I presume she has long returned to her motherland but what a punt!