But what if you want to mess with your high roommate and you don't have access to a bunch of obscure chemicals or the basic knowledge needed to mix them safely? Don't despair! Can you get your hands on a grape, a knife, a glass, and a microwave? If not, then we're really sorry the economy turned on you so viciously. If so, cut the grape into two pieces. Then take one of the pieces and slice it in half again, leaving the two quarters connected by the skin. Place it inside the microwave under an upturned glass and turn it on. Then step back and watch aliens abduct a piece of chopped fruit.

Terrence Smith

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What you're actually doing is creating a very small amount of plasma. You probably learned in school that there are three states of matter (solid, liquid, and gas), but there's actually a fourth type, the hard-to-define rebel matter called plasma that comes from superheating a gas until it ionizes. Grape juice happens to be rich in ions, so it's one of the better mediums to use if you want to observe some simple science or make some bets and take cruel advantage of your impaired housemates.

As a responsible website, we must remind you to never try this experiment at h- you already went out and bought some grapes, didn't you? Just be careful: The ozone generated inside the glass can be toxic in high quantities. So tell your friends that the microwave needs to recharge its death ray after every use.