watinbg line to go beind the door

I went to Wise Guys one afternoon about 4:00. There were about 8 girls there. They were taking their turn dancing but the real action was at the tables. As soon as a customer came in they would sit with them at a table. If a customer went to the bar they would go there and talk them into going to a table. Once at the table for q5 minutes the dancer would bring money to the bar to let the bartender know they were gong to use the locked back room. There was actually a line to get their turn into one of the two back rooms. It was a constant swinging door back there. It seemed to be the most popular room in Washington Park. I am going back again with more money to find out why it is so popular.