A night at Dimples, Japantown’s sometimes gross, often funny, always welcoming oasis

Summary: It’s a Friday around 11 p.m., and Dimples is in full swing. The karaoke rooms of this subterranean Japantown bar are occupied by one party of mild middle-aged men singing Korean songs, and one group of decidedly not-mild 30-somethings singing the standards. Shouted segments of “Don’t Stop Believin’” blare into the main bar whenever someone opens the door.