In the Season 7 episode 'Homer the Smithers', Burns is presented with a Junior Jumble-
Amazingly, it's a fully-constructed far-too-easy jumble. The clue involves a woman calling her husband a 'fat slob', while the riddle is 'What did the man need?' So let's solve it!
Which gives us the letters DETH. Which can't be turned into anything at all - so the Jumble is a failure. Strangely, though - it's simply a case of the circles being misplaced. If they were slightly rearranged, the selected letters would be DTIE.
This, of course, can be rearranged into what the fat man needs. A 'DIET'.