Bucket of chicken joke

One day a State Trooper was pulling off an expressway near Chicago. When he turned onto the street at the end of the ramp, he noticed someone at a chicken place getting into his car. The driver placed the bucket of chicken on top of his car, got in and drove off with the bucket still on top of his car. So the trooper decides to pull him over and perform a community service by giving the driver his chicken. So he pulled him over, walked up to the car, pulled the bucket off the roof and offered it to the driver. The driver looks at the trooper and says, "No thanks, I just bought some."