The engineering group watched from inside the building while the accounting group prepared a lunchtime barbecue.

After setting up their grill and tables, the accounting supervisor came out with a two-gallon can of acetone (borrowed from the manufacturing group), and soaked the charcoal.

The engineers pounded on the windows and waved frantically to try and discourage the lighting of the match. The accountants waved back, happy to be noticed.

After the fireball, they found the grill about twenty feet away and the dazed supervisor about 10 feet away. The accountants went hungry that day.