Phone call actually received by someone I know, from next-door neighbor:
"Our cable TV is having interference right now, is yours?"
"Not as far as I know… what channel are you watching?"
"We’re not watching a channel. We’re playing a tape."
During the Gulf war, here in Israel, there was a family watching the Cosby show, and taping it just in case there would be another air-raid siren. Sure enough there was, and they filed into their sealed rooms. After the whole thing was over, they returned to watch their video tape. And what do you know, the same thing happened just about the same time in the show. After they retuned to their sealed room for a third time they realized it was the tape and not a real drill.