The next time a sporting event gets boring, draw a tiny face on your little finger and let Mr. Pinky give a play-by-play description of the game—in a high-pitched voice, of course.

During a conversation with a teacher, say, "chirpledeekirpledeedum" in the middle of each sentence.

  The next time you're at the gym, stand in front of the lightest barbell you can find. Stretch and flex and act like the strongest person in the world. Then lean over and act like the weight is impossible to lift. The more you grunt and groan, the better!

Stuff as many grapes as possible behind your upper lip and try to talk.

Stop people on the corridor, pull out a map of Greece and ask for directions to the Parthenon.

The next time you look through a microscope announce to your lab partner: "Hey, look in here. It looks just like my Uncle Stu!"

Wear goofy headbands and when people look at you funny, say loudly, "What? What? What are you looking at?"

Paint smiley faces on an old pair of shoes and wear them to school.

Remember your last visit to the zoo and do your best imitations of the animals that are drawing the biggest crowds.

Blow up a balloon then suddenly let it go. Follow the flying balloon around the room and shout dramatically, "He's dying! He's dying!" When the balloon hits the floor, pronounce it "dead."

Hit yourself in the face with a whipped cream pie.

Wear socks on your hands. When people ask about it, say matter of factly, "My toes are protesting."

Just laugh—it's contagious, ya know.