Frozen Shaving Cream Prank

If you freeze a can of shaving cream in liquid nitrogen, then carefully hacksaw the can open, you can pull out a frozen shaving cream cylinder. This frozen foam block will expand at it heats up, making a huge mess! Two frozen shaving cream "bombs" can fill an entire car, so a car with a window rolled down makes the perfect target!
The shaving cream had nearly overflowed from the bowl, overfilling it with about 12 cups of foam. It appears that the foam had expanded to about 850% of its frozen volume.