今月10日、ニューヨークシティから東京、マドリッド、そしてモスクワなど世界中から数万の人々が、あるミッションのために勇敢に鉄道駅に降り立った。そのミッションとは、「パンツ(ズボン)をはかずに公共交通機関に乗車すること」だ。
この「パンツをはかずに地下鉄に乗ろうよ運動(No Pants Subway Ride)」は、名前のとおり、他の乗客が冬服を着飾っているなか、下着姿で列車に乗車するというもの。
ニューヨークを拠点とするいたずら集団「インプルーブ・エブリウェア」が始めたもので、今回で15回目となった。
「参加者はコート、帽子、スカーフ、手袋など、全てを身に着けているかのように振る舞うのです」と、同集団は公式サイトで説明する。
「1つだけいつもと違うことと言えば、パンツをはいていないことですね」。
このグループによると、今年のイベントには25カ国を超える60都市以上から参加者が集まったそうだ。
以下は、今月10日のいたずら心たっぷりの写真たちである:
#London ノーパンツサブウェイライド2016
#Tokyo ノーパンツサブウェイライド
#Moscow ノーパンツサブウェイライド
ユニオン駅、ロサンゼルス

ユニオン駅、ロサンゼルス

ブカレスト、ルーマニア

ニューヨークシティ

ニューヨークシティ

プラハ、チェコ共和国

プラハ、チェコ共和国

ユニオン駅、ロサンゼルス

ニューヨークシティ

プラハ、チェコ共和国

この記事はハフポストUS版に掲載されたものを翻訳しました。
【関連記事】ハフィントンポスト日本版はTwitterでも情報発信しています。

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Women jump for a photograph as they take part in the first edition of the No Pants Subway Ride in Bucharest, Romania, Sunday, Jan. 11, 2015. The No Pants Subway Ride began in 2002 in New York as a stunt and has taken place in cities around the world since then. Organizers call it âan international celebration of sillinessâ and are organizing it in dozens of cities on Sunday. (AP Photo/Vadim Ghirda)
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Two girls react as people in underpants taking part in the 'No Pants Subway Ride" event stand next to them in an underground train car in Warsaw, Poland, Sunday, Jan. 10, 2016. The "No Pants Subway Ride" began in 2002 in New York as a stunt and has taken place in cities around the world since then. (AP Photo/Alik Keplicz)
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Two men clad in colorful underwear walk up the subway steps during the 15th annual No Pants Subway Ride Sunday, Jan. 10, 2016, in New York. The group event, a prank meant to amuse, has been going on since 2002. (AP Photo/Kathy Willens)
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Two girls prepare to take part in the No Pants Subway Ride in Prague, Czech Republic, Sunday, Jan. 10, 2016. The No Pants Subway Ride began in 2002 in New York as a stunt and has taken place in cities around the world since then. (AP Photo/Petr David Josek)
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Youngsters ride on a train as they take part in the first edition of the No Pants Subway Ride in Bucharest, Romania, Sunday, Jan. 11, 2015. The No Pants Subway Ride began in 2002 in New York as a stunt and has taken place in cities around the world since then. Organizers call it âan international celebration of sillinessâ and are organizing it in dozens of cities on Sunday. (AP Photo/Vadim Ghirda)
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Youngsters ride on a train as they take part in the first edition of the No Pants Subway Ride in Bucharest, Romania, Sunday, Jan. 11, 2015. The No Pants Subway Ride began in 2002 in New York as a stunt and has taken place in cities around the world since then. Organizers call it âan international celebration of sillinessâ and are organizing it in dozens of cities on Sunday. (AP Photo/Vadim Ghirda)
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A pantless woman laughs as she walks into the Union Square subway station during the annual No Pants Subway Ride, Sunday, Jan. 11, 2015, in New York. The No Pants Subway Ride began in 2002 in New York as a public prank and has since been celebrated by commuters around the world. (AP Photo/Kathy Willens)
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People don matching underwear during the annual No Pants Subway Ride, Sunday, Jan. 11, 2015, in New York. The No Pants Subway Ride began in 2002 in New York as a public prank and has since been celebrated by commuters around the world. (AP Photo/Kathy Willens)
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A man in boxer shorts and a woman wearing hosiery with a garter belt wait for a train at a Manhattan train station during the 15th annual No Pants Subway Ride Sunday, Jan. 10, 2016, in New York. The group event, meant as a prank to amuse unsuspecting subway riders, has been going on since 2002. (AP Photo/Kathy Willens)
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Youngsters share a laugh as they take part in the No Pants Subway Ride in Bucharest, Romania, Sunday, Jan. 10, 2016. The No Pants Subway Ride began as a stunt in 2002 in New York and has taken place in cities around the world since then. Organizers call it âan international celebration of sillinessâ and are organizing it in dozens of cities on Sunday. (Andreea Alexandru/Mediafax via AP) ROMANIA OUT
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A man reads a newspaper as he takes part in the first edition of the No Pants Subway Ride in Bucharest, Romania, Sunday, Jan. 11, 2015. The No Pants Subway Ride began in 2002 in New York as a stunt and has taken place in cities around the world since then. Organizers call it âan international celebration of sillinessâ and are organizing it in dozens of cities on Sunday. (AP Photo/Vadim Ghirda)
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Bottomless commuters wait for a subway train after shedding their garments during the annual No Pants Subway Ride, Sunday, Jan. 11, 2015, in New York. The annual event began in 2002 in New York as a public prank and has since been celebrated by commuters around the world. (AP Photo/Kathy Willens)
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A woman walks past several men clad in their underwear at the 59th Street station in Manhattan during the 15th annual No Pants Subway Ride Sunday, Jan. 10, 2016, in New York. The group event, a prank meant to amuse unsuspecting subway riders, has been going on since 2002. (AP Photo/Kathy Willens)