It's funny on several levels. 1. "Pigs in a donut box." Haha, good joke. 2. The clerk and the cop kept their cool, probably not the reaction he was looking for, making the entire exercise a total waste of his time. 3. He better keep his nose clean for quite some time, or he might get the roadside body cavity search next time he is pulled over.
At least he didn't run over 7 cop cars with a tractor...
Jason