Despite the winter chill, there’s an annual January tradition where riders flock to metro stations around the country to ride the subway sans pants. As such, Metro passengers on Sunday may be exposed to a fleshier commute than usual.

The No Pants Subway Ride began in New York over a decade ago via improv collective Improv Everywhere. Here in Los Angeles, the event is facilitated by GuerilLA. This Sunday will be the ride's ninth year, and the event will wind bottomless riders from downtown L.A. to Santa Monica. GuerilLA refers to its participants as "agents" on a "mission."

Should you choose to accept the mission, agents will meet at Union Station in downtown Los Angeles beginning at 1 p.m. Whether or not you elect to ride from your local station to Union Station without pants on seems to be up to your (lack of) discretion, but riders will be encouraged to ditch the trousers at Union Station. It seems prudent to at least bring a pair of pants along, just in case there's some kind of emergency.

Once at Union Station, agents will be separated into six different groups as determined by the first letter of their last name. Ride captains will lead the groups on a journey via the Red Line to 7th St/Metro Center, then to downtown Santa Monica via the Expo Line. This is the first year Santa Monica has been an option for the riders, who have previously descended on Hollywood. After everyone has assembled in Santa Monica, there will be a group photo and an after-party (location TBA).

There are very detailed instructions as to what time each group should meet and where here.

Riders are encouraged to act like they're going about a very ordinary day, and if asked about their lack of pants, they should reply, "I forgot them." Riders should be fully dressed except for the pants, and they should definitely wear underwear. Being entirely bare will only get you arrested. However, as long as private areas are covered and participants do not disturb their fellow riders, there should be no legal consequences. It's free to participate, with the exception of Metro fare. A one-day pass will cost you $7.

It should be a pleasant day in Los Angeles on Sunday, with forecasted highs in the mid-70s.

Related: Photos: Riders Strip Down For No Pants Metro Ride 2014

Photos: Riders Go Bottomless On 'No Pants Metro Ride' Day (NSFW)



