For your entertainment, I present a trick that I like to play for the kids. They seem to get a kick out of it and I figured if you haven't seen it before you might want to see it now.
We're going to make George laugh and cry. To do this, use a one dollar bill. It's best if it's one that's not too wrinkled up. The crisper the paper, the better.
Fold the bill right through George's left eye like this:
Then fold the bill right through his other eye and crease them pretty good. Next, bring the two folds together and make a third crease going the other way between them. Like an accordion:
Then, pull them slightly apart, not straightening them out completely, and tilt the bill away and then toward you. Tilting it away makes him laugh:
And tilting it toward you makes him cry: