Boil an egg by putting it in a pan of water. Keep the pan on high heat on the stove for about 20 minutes.
Rinse out an empty glass beer bottle. This trick also works with a glass milk bottle. Place the bottle on a flat surface.
Roll a piece of paper so it can drop easily into the beer bottle. The paper shouldn't be longer than the bottle. Light the end of the paper on fire.
Drop the lit paper into the beer bottle.
Balance the egg on the neck of the beer bottle. The egg needs to completely cover the bottle's opening so a vacuum is created inside the bottle.
Watch as the heat from the fire creates a vacuum strong enough to suck the egg down the bottle's neck.