Defacement of currency is a violation of Title 18, Section 333 of the United States Code that carries with it a fine of $100 and up to six months in jail. Six months in the slammer for drawing some goofy lips on Abe Lincoln? Ouch, a little harsh. The chance of doing time didn't scare these 20 enemies of the federal reserve from doodling some incredibly creative and funny dollar bill art. You may think twice about slipping one of these masterpieces into the vending machine.