Ghost Tour: a twist ending!

We went on the San Francisco "Ghost Hunt" (it's a walking tour) and at a stoplight, a police car came rolling through the intersection. The group waved (like you do) and as it passed, we noticed that not only were the cops inside waving giddily, there was a guy in the backseat giving a halfhearted wave.

Laughed my ass off. Funniest thing I've seen in weeks.