Karaoke bars in Thailand are entrainment places where friends go to sing together. But they can be also bars where men go to meet girls and get laid.
Thai karaoke bars located in seedy areas are fronts for brothels. You drink in the company of a hostess girl, sing a few songs together, and finish in the bedroom for a good session.
I talk about Karaoke bars and other sex venues in the Thailand sex guide.