Forty years on an iceberg

Forty years on an iceberg [triangular "iceberg" shape],
over the ocean wide [wavy motion].
Nothing to wear but jammys [slide hands up and down the sides of your body],
nothing to do but slide ["slide" motion].
Woo!
The air was cold and icy [shiver!]
the frost began to bite [nipping motion].
I had to hug a polar bear [hug yourself or neighbor]
to keep me warm at night.
Oh!

Repeat over and over, but on the second repeat, hum the first line; on the third repeat, hum the first and second lines, and so on. "Woo!" and "Oh!" are always sung. On the very last repeat, sing all the words.