I worked at taco bell a few years ago, and one of the cashiers took a few fake fives. We had to call the police, they came and took the bills and said they were going to turn them over to the FBI. At first glance the fives looked pretty good, but if you took a second one, youd know they were fake. These werent even printed on a 1 dollar bill, they were on a whole different paper. And they were a lot lighter than all the rest of the money. But, they felt like real money.