You want a good laugh?
Stop by a store that carries boating supplies on the way home. Buy a large air horn, usually $10-$15 price range. Go home, leave the car running, stand at the foot of the bed, aim it at the Mr. and sound it off for a good full second, not just a little toot. Be sure to run like hell because when he climbs down from the ceiling he's going to try to kill you, but you can giggle madly while you make your escape.