Make some seemingly normal slime that behaves very strangely due to electric force

What you need

-Some cornflour (cornstarch)     -Some vegetable oil      -A balloon       -A cup       -A spoon

What to Do

Put 2-3 tablespoons of cornflour in the mug

Mix in the vegetable oil until you get a consistency like that of thick cream.

Charge up the balloon by rubbing it on your hair.

Pour some of the mixture out of the spoon, and then move the charged part of the balloon near it.