What's going on down South?

Emma Garraway decided to get out for some snow tanning.
Emma Garraway decided to get out for some snow tanning.
Hannah dons a bikini to lounge in the snow.
Hannah dons a bikini to lounge in the snow.
Hannah and Grace feel the chill during today's heavy snowfall in the South Island.
Hannah and Grace feel the chill during today's heavy snowfall in the South Island.
Spiderman uses his super powers to ignore the cold at the New Brighton pier.
Spiderman uses his super powers to ignore the cold at the New Brighton pier.
Spiderwoman at the New Brighton pier.
Spiderwoman at the New Brighton pier.
Francine Evans' husband takes a dip.
Francine Evans' husband takes a dip.
Students play dress-down in the snow.
Students play dress-down in the snow.
Some students are having a hard time letting go of summer.
Some students are having a hard time letting go of summer.

Today's South Island snowfall has uncovered a strange phenomenon.

Stuff called for reader pictures of the winter wonderland. We always do. But this time, for some unexplained reason, it has led to a flurry of pictures of Mainlanders frolicking in the snow in their underwear.

The photos have ranged from men striking poses to girls covering up with artistically-placed frying pans.

Snow in Woodham Drive, Ashburton.
Snow in Woodham Drive, Ashburton.

GETTING CREATIVE: Maya Stiven makes snowmen in her Beckenham backyard today.
GETTING CREATIVE: Maya Stiven makes snowmen in her Beckenham backyard today.
Police closed SH6 north of Greymouth to most traffic after McLeans Creek overflowed.
Police closed SH6 north of Greymouth to most traffic after McLeans Creek overflowed.
DOG'S LIFE: Gemma the bichon in her Rangiora backyard.
DOG'S LIFE: Gemma the bichon in her Rangiora backyard.
Snow in Christchurch.
Snow in Christchurch.
Flooding on State Highway 6 north of Greymouth.
Flooding on State Highway 6 north of Greymouth.
BIRD FEED: A finch feeds in Eric Pollock's Rangiora backyard.
BIRD FEED: A finch feeds in Eric Pollock's Rangiora backyard.
Snow in Wigram, Christchurch.
Snow in Wigram, Christchurch.
A house surrounded by floodwaters north of Greymouth.
A house surrounded by floodwaters north of Greymouth.
Lakya the husky has an early morning romp in the snow in Ashburton.
Lakya the husky has an early morning romp in the snow in Ashburton.
WARM KITTY: Mia the cat is wrapped up warm against the cold by her owner Chris Hlavac.
WARM KITTY: Mia the cat is wrapped up warm against the cold by her owner Chris Hlavac.
SURF'S UP: Southshore beach was transformed by snow today.
SURF'S UP: Southshore beach was transformed by snow today.
WATER'S EDGE: Snow reaches the sea at Southshore beach.
WATER'S EDGE: Snow reaches the sea at Southshore beach.
FUN IN THE SNOW: Nick and Claire Goodey at Sumner Beach.
FUN IN THE SNOW: Nick and Claire Goodey at Sumner Beach.
FAMILY FUN: Dr Annie Maillard and Esme Maillard enjoy a snowfight at TaiTapu.
FAMILY FUN: Dr Annie Maillard and Esme Maillard enjoy a snowfight at TaiTapu.
PLAY TIME: Summer Bennett rugged up in Rolleston.
PLAY TIME: Summer Bennett rugged up in Rolleston.
Wintry conditions at Christchurch Airport.
Wintry conditions at Christchurch Airport.
Snow falls in Westmorland, Christchurch.
Snow falls in Westmorland, Christchurch.
Snow in Burnside, Christchurch.
Snow in Burnside, Christchurch.
NEVER TOO EARLY: Jazmine was out playing in the Twizel snow before daylight.
NEVER TOO EARLY: Jazmine was out playing in the Twizel snow before daylight.
PRETTY IN PINK: Flowers still blooming in Ilam.
PRETTY IN PINK: Flowers still blooming in Ilam.
SNOW LOVER: Eli of Ilam loves snow, says the Dowsett family.
SNOW LOVER: Eli of Ilam loves snow, says the Dowsett family.
PREBBLETON: Winter landscape
PREBBLETON: Winter landscape
SLIPPERY: Careful progress for traffic on Dyers Pass Rd.
SLIPPERY: Careful progress for traffic on Dyers Pass Rd.
ASHBURTON: Snow has been falling heavily in mid-Canterbury.
ASHBURTON: Snow has been falling heavily in mid-Canterbury.
SNOWGLOBE: Ashburton resident Christine Richards has photographed the large flakes as they fall.
SNOWGLOBE: Ashburton resident Christine Richards has photographed the large flakes as they fall.
WHITE OUT: Snow lies thickly on a garden in the hills above Rangiora.
WHITE OUT: Snow lies thickly on a garden in the hills above Rangiora.
WINTRY: Rangiora residents woke to see their gardens blanketed in snow.
WINTRY: Rangiora residents woke to see their gardens blanketed in snow.
SHELTER: Some stock have found shelter from the wind and snow.
SHELTER: Some stock have found shelter from the wind and snow.
SHIVERING: No escape for these animals in a paddock near Rangiora.
SHIVERING: No escape for these animals in a paddock near Rangiora.

But why? Has the polar blast frozen some of their inhibitions? Are those in the South simply more comfortable in their own skin?

And why just the South? The lower North Island was hit hard by a rare snow dump last year yet Stuff's typical call for reader pictures didn't generate anything like this near-nude response.

Is it something in the water down there? Are the Southern Men and Women just made of tougher stuff?

We'll add to our gallery as we await your answers...