I have an employee in my org (let's just call him Joe S) who is a great guy and a star performer. Everybody likes him, and he never gets in trouble. But... he will sometimes exhibit strange behavior.
For example...
I recently traveled with Joe and 3 other people. We have a $100 per diem when travelling. Joe did not have any breakfast or lunch. When it came to dinner, Joe said that he'd meet us in the hotel restaurant.
He showed up with several armfuls of bags. He explained that he had gone out to McDonalds and spent all $100 on something like 75 McDoubles. He said he was training for some sort of eating content.
It took several hours, but he ate (and I kid you not) every last one of those damn burgers. Every... freaking... burger! I never would have guessed this was possible.
Nobody in our group appeared to be offended by his behavior. They were just amused and surprised. He didn't appear to think this was anything out of the ordinary. I'd like to say this is an isolated incident, but he's done some similar stuff before.
As his manager, I'm trying to figure out if it's my role to talk to him about this kind of strange behavior. Nothing he does is every against the rules, offensive, harmful (except maybe to himself), illegal, etc. It's just... strange!
Is it better to talk to him about it? Or just quietly ignore it? If I talk to him, what the heck do I even say?