Well...grab a $20 dollar bill and try this:
Step 1: Fold the bill in half
Step 2: Fold the back left up
(see image below)
Step 3: Fold the back right up
(see image below)
Result: The Pentagon ablaze
Now turn the bill over
Result: The Twin Towers ablaze
With the correct folds you can re-arrange the letters to spell the name OSAMA. Try it for yourself.