LOL!
What do you think it was?
A little jacuzzi motor ?

Really?

You never put dry ice in water?

Enclosed in a capped bottle...

Artie Bucco isn't immune.

Artie was a dumbass.

Yes. Have done the same stunt with dry ice. Amazing how few have any experience with such.

Bet he can find a tube video now to post.

That was my first guess, but no there's no source around here that I can find. It was suggested by Rock Chuck for long term grain storage.
That was a pretty good practical joke.

I worked with a foundry guy who could taste molten bronze to see if it was ready. Trouble was a new guy believed it and burned his finger off. He missed the licking your finger first part so had no steam cushion.