How to get a shock?

What is the best way to get a small shock? I noticed that sometimes when i'm driving a car and wearng a sweater, when i come out of the car and close my door, i get a small shock. I want to know is there any safe way to get a small shock? Like rubbing a balloon on your hair?

Heaven forfend we should use words according to their actual meaning. Why, we might actually communicate meaningfully that way!