Weed Got Me Crazy

Sometimes I read stories about people who call the police after their drugs were stolen, or who get pulled over for speeding while they're transporting mass quantities of cocaine, and I wonder "how can people be that dumb?" So it was with surprise that I had the following encounter last week.

One of our regular customers came up, looking really stressed out. After a few moments of casual conversation, he asked if he could speak to me privately. We went into my office.

Me: "What's up?"
Him (mumbling): "Um, I think I lost something."
Me: "Okay, can you describe it for me?"
Him: "Um...it's, like, a baggie. With, um, some green stuff."
Me: "What?"
Him: "Um, it kinda looks like oregano."
Me: "Are you actually asking me if someone turned in your marijuana?"
Him: "No!" He looked at the ceiling. "Um, did they?"
Me: "I really couldn't return illegal drugs if someone turned them in."
Him: "What? Why?"
At a complete loss for words, I stared at him for a few seconds.
Him: "Um, just kidding! Ha ha ha!"(runs out of the office)

I have to wonder - did he honestly think that I would hand him a bag of marijuana? I suppose it's nice that he trusts me, but in what universe is it okay to ask the librarian if someone turned in your weed?

Incidentally, someone did turn in the weed later that day, and we tossed it in the trash can.