Thats exactly how you should celebrate Independence Day this year. Possibly the role of the British could be filled in by a small figurine which you could pretend represents your boss or that cranky supervisor lady. This 25 inch field cannon can sit very comfortably on your desk and its best part is of course the fact that it works just like a real cannon.

Besides its even made of real iron which explains the 20$ delivery charge on top of the $150 USD price.

This cannon features an automatic charger mechanism for rapid, multiple firing plus an automatic flint ignitor. Weighing 7 lbs, it operates on the same principle as a gas engine in an automobile--using gas, fresh air, and a spark. Powdered calcium carbide ammo is added to the water in the chamber of the cannon. The auto flint firing mechanism creates the spark to give perfect combustion. This 25 inch cannon produces a realistic flash and boom that makes celebrating a real bang-up time.

The carbide ammo is sold seperately so you need to shell out a bit extra for those shells.