Official SkyTrain rules prohibit eating or drinking on the trains and discourage listening to load music, but they don't say anything about wearing pants.

The No Pants Skytrain Ride returns to Vanccouver next Sunday, January 10th. This is the 7th time this event has taken place in Vancouver on select SkyTrain routes, all in the name of comedy.

The event is part of global de-pantsing on mass transit around the world and is organized by an international improv comedy group Improv Everywhere.  This year up to 400 brave commuters are expected take part.

So how does it work?  Riders willing to disrobe gather at designated SkyTrain stations, where you can get a group photo taken with your fellow pranksters.  At the appointed hour, everyone boards the SkyTrain, waits for the doors to close and then - in casual fashion - stands up and removes their pants.  If anyone asks you why you have undressed, you just tell them you were getting uncomfortable.

The official route for this years event is being kept secret for the moment, but updates will be posted on the Improv Anywhere site and Facebook page as the date approaches.  The ride is scheduled to kick off at 2:30 pm sharp, and organizers are promising 2 separate starting points.

Last, but not least, there is 1 important requirement.  You have to keep a straight face about the whole thing.  Part of the gag is that you're supposed to act like it's perfectly normal to drop your pants on mass transit.  Sounds like a lot of fun - Who's in??