I was attending a conference on improving customer relations when a man dressed in hunting camouflage walked up to me. Inscribed on his blaze orange cap were the words, "Don't shoot idiot."
"Hey Doc, remember me?" he said. "Having dangled my modifiers for years, you cured me of that common error when I first made your acquaintance in the '90s."
"I do remember you, Lester," I said, "but I think we need to review some basic English grammar. Let's begin with missing commas with forms of direct address."
"Sorry, Doc. Is that better?"
"It is. And?"
"Let's see. I should have said, 'Hey, Doc,' with a comma between the interjection and the form of direct address."
"Correct. Now how about your cap?"
"My cap? It's a riot, don't you think?"