When you don't realize a person is dead and you suffer a severe case of foot-in-mouthdisease.
Earl: "I'm such an idiot. I saw our neighbor Mrs. Lundgren at the store today, so I asked her how her husband was doing. I didn't know he was dead. She said 'he's gone' and I thought he was on a trip. So I asked, 'Why didn't you go with him?'"