The flyer for the Air Sex World Championships.

The Air Guitar Championships were so 2008. Now comes the Air Sex World Championships. This Saturday, the touring competition will bring the sport of imaginary sex acts to the Nomad World Pub. On stage, contestants will simulate the wildest sex they can imagine with an invisible partner. Curmudgeons: commence head-shaking now.

The competition, which began in 2009, has spread to cities nationwide, with the finale — er, climax — set for Austin, Texas later this year. Contestants have two minutes (sounds about right) to perform their simulated sex act to the music of their choosing. Judges and the audience determine the winner.

There are a few rules, such as no nakedness. But according to the Air Sex website, the "only important rule is that all sexual climaxes must be simulated, not real." Intense.

Nomad owner Todd Smith said he did a double take when the West Bank bar was first approached about the event. "We didn't know if it was real," he said.

To get a whiff of this craziness, check out videos from past Air Sex Championships on its YouTube channel (some of which are NSFW). The visuals are hardcore, for lack of a better word.

Info: 9 p.m. Sat. 501 Cedar Av. S., Mpls. $6. 21 and older. 612-338-6424. www.nomadpub.com.