My favourite prank in heavy metalwork was to get a penny and spend three or four minutes making it really hot with a blowtorch, and then leave it on Mr Lane’s desk, so that he’d see it and pick it up out of curiosity.
First you’d hear: ‘Waaaaahhhhhh!’
Then: ‘Osbourne, you little bastard!’

Heh-heh-heh.
The old hot-penny trick. Priceless, man.

Autor: Ozzy Osbourne