There were three Eskimos in Alaska, and one time while they
were at their local bar, they got to talking about how cold
it was outside, and how cold their igloos were. They could
agree on everything but whose igloo was the coldest, so they
decided to determine who indeed had the coldest igloo.
They went to the first Eskimo's igloo, where he said "Watch
this!" and poured a cup of water into the air. Well, the water
froze in mid-air and fell onto the floor solid. "Not bad",
said the other Eskimos, but each maintained their igloo was
colder still.
So they went to the second Eskimo's igloo, and he said "Watch
this!" and took a big breath and exhaled, whereupon his breath
froze into a big lump and fell to the floor. "Wow, that's
colder than mine!" said the first Eskimo.
But the third Eskimo exclaimed his was colder still. So they
ended up at the third Eskimo's igloo. He said "Watch this!"
and went into the bedroom, threw back the thick furs, and
retrieved one of several small balls of ice there. He took it,
put it in a spoon, and held a match under it.
When it heated up enough, it went "FFFAAAARRRRTTT".