There's a show on MTV called The Osbournes. They had a camera crew live with/follow Ozzy and his family for a couple of months. (Don't ask how I found out about this.) The whole family has this hysterically caustic wit.

One night at a restaurant, the daughter muttered something derogatory about Ozzy. The whole table (~20 people) laughed but Ozzy, sitting right next to her, asked her what she said. She complained that he's always the only one who didn't hear something.

He responded (and you have to imagine this in the British accent to appreciate it), "Well you didn't stand in front of 30 billion decibels for 35 years. Write me a fucking note."