Members of rival gangs were sitting in the same restaurant when "the younger members of both groups danced provocatively at each other in the manner of top hit Gangnam Style," the Guardian reports.
But the dance-off quickly became an argument, and the argument became a shootout.
Some 50 bullets were fired, but nobody was harmed.
Nevertheless, it has put Thailand gang violence, which has claimed the lives of several Bangkok students this year, in the spotlight.
The song Gangnam Style by South Korea's Psy, and the dance of the same name, have become an international sensation.
The video has garnered nearly 230 million hits on YouTube
and sparked countless parodies. The song tops the charts in several European countries.
The well-dressed, chubby rapper even taught Britney Spears and Ellen DeGeneres how to do the dance, described as "riding an invisible horse in your lower body," on the Ellen show.
The song pokes fun at the affluent Seoul suburb of Gangnam.