GLASGOW could be the only city in the world with a subway system not gettings its knickers in a twist today over people riding the tube with no pants on.

More than 60 cities around the world with a metro system will be taking part in the 14th No Pants Subway Ride including London, Mexico City and Sydney, but last night nothing was planned for Glasgow.

The global event was started by New York-based prank collective Improv Everywhere to spread "chaos and joy" in public places. And in the US, no pants actually means no trousers.

All it takes is one person to post a plan on Facebook, Improv will promote it and the no-pants ­pantomime begins.

Improv Everywhere founder ­Charlie Todd refers to the event as a "celebration of silliness." Recent No Pants Subway Rides have had nearly 4000 participants in New York, and thousands more around the world.

Romanian subway officials have already got hot under the collar over the planned stunt in Bucharest.

Briefed about them, Metrorex subway managers said those "who disturb public order or are indecent will be fined", and reported to the police.

Todd admitted any decency issues would be down to those organising.

"I don't believe it's ever happened in Scotland and I know Glasgow has a subway," said Todd "Someone locally should start one. All of the local rides are organised independently.

"Anyone in any city is welcome to organise one and submit it to us for listing.

"If someone from Glasgow wanted to start a local ride they would just need to take the initiative of picking a time and a meeting point and ­leading the group of people who show up in a route.

"They would need to share a ­Facebook event, or similar information page, with me so I can add it to the global list for promotion."

He told the Sunday Herald: "Yup, even you could do it. And it still counts even if you're the only one that does it.

"One guy did it by himself in Egypt last year as no-one else was brave enough to join him.

"Of course, in most cities ­organisers invite friends who invite friends and word spreads through blogs and media coverage.

"I imagine a mention of the event in a publication would be enough to draw a reasonable crowd to the event.

"We do not ask the permission of the subway system in NYC as we don't think riding the train in our underwear is something that requires permission.

"But it is up to the local organiser to determine the local indecency laws and decide whether they think it is necessary to seek permission from their local transit authority."

The event was started in New York in 2002 and the first ride had just seven participants.

The Improv Everywhere website says: "The idea behind No Pants is simple: random passengers board a subway car at separate stops in the middle of winter without pants.

"The participants do not behave as if they know each other, and they all wear winter coats, hats, scarves, and gloves.

"The only unusual thing is their lack of pants."