Joke of the month

A husband suspects his wife is havin n affair
He needs to go on a business trip for several days, so he decides to set a trap. He puts a bowl of milk under the bed. From the bed sprinds, he suspends a spoon. He has it calibrated so her weight on the bed will not drop the spoon into the milk. But if there is any more weight than that, the spoon will drop into the milk and he will detect it upon his return. He comes home several days later. The first thing he does is to reach under the bed n retrieve the bowl. The bowl is full......of butter..