Two police officers respond to a crime scene behind a grocery store. The homicide detective is already there.
'What happened?' asks the first officer.
'Male, about twenty-five, covered in Raisin Bran and dead as a doornail.'
'Good grief,' says the second officer. 'Didn't we have one covered in Frosted Flakes yesterday? And Captain Crunch last week?'
'You're right. I'm afraid,' said the detective as he took a drag from his cigar, 'this is the work of a cereal killer.'