Reading between the lines, the young inexperienced and excitable punter is prefered here. The mere sight of a bit of naked flesh will set him off and a few tugs and the job is oxo. But the experienced and older punter has seen it all before and will have a somewhat slower metabolism. Ergo the experienced punter keeps you honest in that you actually have to work for a living with them.
And if you don't like hard work, explore other career options.