Cell Phone Rant

I may show myself to be a grouchy oldster here, but I was bothered by something yesterday. I was at my favorite microbrewery and, beer being beer, went to use the restroom. I'm standing at a urinal and another guy enters, talking away on his cell phone. He goes to the next urinal, and tells whoever he's talking to "yeah, I'm just taking a leak", then continues his rambling conversation. And I've had these type of encounters before.
Now, I'm comfortable with bodily functions. But is it a topic of phone conversation? Are people so tied to their phones that they feel a need to tell someone exactly what they're doing at every single moment?
I have a cell phone, but I don't like talking on the phone so I only use it to communicate specific information. "meet me at ..." type communication. I don't feel any need to communicate my bodily functions to someone as a phone conversation.
Am I alone in finding this annoying?