Sunday saw the annual No Pants on the Tube day rear it's head and passengers riding the tube attempted business as usual whilst hundreds boarded trains without wearing any pants.
Most were dressed appropriately for the icy blasts with hats, gloves and scarves, but waist down, had nothing but pants, socks and shoes on.
The yearly celebration stems from a New York prank in 2002 and has since spread to other cities as an annual celebration of silliness.
Vancouver, Prague, London and Milan are just a few of the world's capitals who have embraced the act, be it in the rain or during sunny conditions.
Participants are asked to behave as normal as possible when boarding and alighting the Tube, despite having no trousers on.
The occasion prompted a mixture of responses from Londoners on Twitter, with some finding it entertaining and others recoiling in horror.