You could describe it as air guitar with banging; or a Marcel Marceau show with pornographic sound effects. Air sex is, not that surprisingly, an innovation that originated in Japan — the earliest video examples of the NSFW quasi-dance-routine performance art are of purportedly single Japanese dudes exaggeratedly humping away at invisible partners. In air sex competitions, (clothed) entrants choose a two-minute clip of music (bring your own!), then get up on stage and try to impress the crowd and judges with their prowess and sense of humor by making sweet or salty love with an imaginary partner. The American version in town tonight, somewhat misleadingly dubbed the World Championships, is a touring production of a regular show at Austin’s Alamo Drafthouse hosted by comedian Chris Trew.
Sun., July 1, 8 p.m., $10, North Star Bar, 2639 Poplar St., 215-787-0488, northstarbar.com.