You are obviously an expert at these matters, and unpleasant to boot. Why are you so offensive?
I like the newbies, not all are very experienced, so it's a fair opening question. Cuts to the chase nice & quick. You then need to make sure that they understand, and are willing to do, whatever it is that you want them to do. Such verbal contracts are, in the main, pretty successful.
I dislike bars, frequented as they are, by people like yourself - plus the rough old pros do not turn me on at all.
Is it really so satisfying to put people down? Your behaviour says a lot about yourself, more than it does about me.