Are They Crazy or Just on the Phone?

The first time I saw someone using a handless phone, I thought he was talking to himself. There was no one else around, and he was (I thought) having a conversation with the air. Eventually I realized that he was on the phone.

Recently a woman came into the store and wandered around, angrily talking to someone. Except she wasn't on the phone! She actually was talking to herself.

It was more than a little creepy!