An informal poll and an excuse for a joke
It's a good idea after being in a jail, too. However, I almost always shake hands with my clients, except the ones with their hands down their pants. How about the rest of the PD world?
So there's a Navy Lieutenant and a Marine Gunny in a bathroom. The Gunny finishes up at the urinal, zips up, and heads for the door. The Lieutenant tells the Gunny to stop, and tells him, "Gunnery Sergeant, at the Academy, one is taught to wash one's hands after using the lavatory." And the Gunny replies, "Sir, in the Corps they teach us not to piss on our hands."
And now you know why I'm an attorney and not a comedian.