The ice bucket challenge is latest craze sweeping the internet.
Perhaps it's more suited to a climate with slightly higher temperatures, as it involves pouring a bucket of ice-cold water over your head for charity.
The craze began in the US in support of motor neurone disease and has been picked up in the UK in support of the disease and other charities.
Around the world Facebook and Twitter timelines are full of videos of friends, family and some very famous faces taking on the challenge.
Among the familiar faces were Holywood golfing star Rory McIlroy, who was soaked by fellow golfer Tiger Woods. Meanwhile, Eamonn Holmes took charge of the bucket as he drenched wife Ruth Langsford as she took on the challenge live on This Morning.
And in Northern Ireland among the charities people are supporting is Macmillan, which had 50,000 people take part across the UK, raising £150,000 so far.
People "challenge" someone via Facebook or Twitter to have a bucket of ice-cold water poured over their head in exchange for a text donation to Macmillan.
They then film it, share it, and sit back and watch the nomination process take over as they challenge friends and family to do it next.
You film it on your smartphone and post the video online before texting to donate £3 to Macmillan by sending ICE to 70550.
And if you "wimp out", you text to give £10 instead.
Across Northern Ireland some have kept it confined to the privacy of their garden, while one brave couple took it to an extreme as they stood under a digger bucket and were subject to a deluge.
One challenger from Antrim has raised a very cool £239 through her efforts.
Dressed for the occasion with a shower cap, armbands and flippers 23-year-old Brona Conway said the encouragement from people watching and donating made it worth it.
She said: "I watched others online and had been nominated twice but I felt I was watching the same thing over and over and it was getting boring. So I was discussing it in work and saying that I'd like to make a bigger deal out of it and raise some money.
"My mum lost her friend to cancer this year and she was in the Macmillan unit, so it was the incentive to raise some cash.
"Although the water was cold it wasn't as bad as I had anticipated."
Local politicians have also got in on the act as well, with DUP MP Gregory Campbell taking up the challenge for Cancer Research and nominating Stephen Nolan.
But the BBC presenter tweeted his own challenge stating he won't take part until the First and Deputy First Ministers post their challenges.
... So, who nominated who in the mega celebrity ice bucket challenge?
Facebook founder Mark Zuckerberg nominated Bill Gates, Ryan Seacrest and David Beckham.
Nike boss Mark Parker tagged Rory McIlroy and Tiger Woods, who drenched each other in theirs.
Kris Jenner soaked herself while helping daughter Kylie Jenner with her challenge.
Christiano Ronaldo nominated Jennifer Lopez, Iggy Azalea and Rita Ora.
Jamie Lynn Spears nominated sister Britney.
Justin Bieber nominated all his fans over the world.
Eamonn Holmes drenched his wife Ruth Langsford as she took on the challenge on This Morning.
Lady Gaga doesn’t say a word during her video.
Taylor Swift nominated Selena Gomez and James Franco.
Brazilian footballer Neymar and Pearl Jam's Eddie Vedder both nominated Niall Horan from One Direction.
American country music singer Blake Shelton challenged Gwen Stefani, Adam Levine and Robert Downey Jr. Stefani then tagged Jessica Alba and Nicole Ritchie.
Celebrity hairstylist Ken Paves nominated Eva Longoria.
Justin Timberlake also posted his video online, as did Oprah Winfrey, who nominated Steven Spielberg.
British tennis star Laura Robson challenged Caroline Wozniacki.