Wife: Darling, you know that shockproof, waterproof, anti-magnetic, un-breakable watch you bought me?
Husband: Yes, darling.
Wife: Well, it caught fire.
Husband: Good grief.
Wife: But it's all right. I threw it in the river to put it out.
Husband: It cost too much to throw away.
Wife: It's alright. I fished the watch out of the river and it's still running.
Husband: The watch is still running?
Wife: No. The river, stupid!