According to David Emery for About.com, one trick using a $20 bill involves folding a bill issued after 1998 so it displays an image of the World Trade Center disaster from Sept. 11, 2001. Another trick that uses a $20 bill involves folding it so the name Osama appears at the top of the bill, in reference to the man who orchestrated the Sept. 11 attacks.Continue Reading
To perform the World Trade Center trick using a $20 bill, fold it in half so the top half of the back of the bill is visible. Fold the left half of the bill away from the body so only the letter D at the end of the word "United" and the words "States of America" are shown. Fold the right half of the bill up in the same manner so it appears to reveal a picture of the Pentagon burning.
Turn the bill over on its reverse side to display the image of the World Trade Center. The image should appear to have smoke coming from the top portions of the towers. Performing this trick using a $5, $10, $20, $50 or $100 bill issued after 1998 produces the same result, notes Emery.Learn more about Hobbies & Games