Hey You! What If...

Season 2, Episode 14: You Built a Giant Sand Castle?

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Is it possible to build a sand castle the size of a real castle? We imagine how it could be done, using a pneumatic drill and a huge, solid gold steamroller.

All Episodes - Season 2

You Built a Mega Slide?

You Built a Mega Slide?

You Walked Through Walls?

You Walked Through Walls?

We Got Rid of Bugs?

We Got Rid of Bugs?

You Needed Two of You?

You Needed Two of You?

You Could Stop Global Warming?

You Could Stop Global Warming?

You Lived on Venus?

You Lived on Venus?

You Could Shout Round the World?

You Could Shout Round the World?

You Were Invisible?

You Were Invisible?

We Had Two Suns?

We Had Two Suns?

Your Mind Could Move Things?

Your Mind Could Move Things?

Animals Were Supersized?

Animals Were Supersized?

You Walked on the Ceiling?

You Walked on the Ceiling?

You Were the Last Person on Earth?

You Were the Last Person on Earth?

You Built a Giant Sand Castle?

You Built a Giant Sand Castle?

You Shrunk the Earth?

You Shrunk the Earth?

Money Grew on Trees?

Money Grew on Trees?

You Flew Like a Superhero?

You Flew Like a Superhero?

There Were No Colours?

There Were No Colours?

You Only Ate Burgers?

You Only Ate Burgers?

You Threw a Ball Round the World?

You Threw a Ball Round the World?

You Built the Tallest Building on Earth?

You Built the Tallest Building on Earth?

You Had Kangaroo Legs?

You Had Kangaroo Legs?

You Were Indestructible?

You Were Indestructible?

You Surfed Without Water?

You Surfed Without Water?

Earth Ran Out of Energy?

Earth Ran Out of Energy?

You Could Walk Up Walls?

You Could Walk Up Walls?

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