Police officer
A police officer pulls over an elderly woman on the highway.
“Ma’am”, the officer says, “I clocked you at 22 mph. The minimum speed on the highway is 45 mph.”
“But I just saw a 20 mph speed limit sign,” the woman replies.
Chuckling, the officer explains to the woman that the sign she saw was for interstate 20.
He notices that the woman’s husband is pale as a ghost and visibly shaken. “What’s the matter with him?” he asks.
She answers, “We just got off of interstate 195.”