When Homer was prescribed Medical Marijuana is a recent funny one, overall favorite is probably the one where Mr. Burns wanted to make a fur coat out of the Greyhound puppies.

See My Vest

Some men hunt for sport,
Others hunt for food,
The only thing I'm hunting for,
Is an outfit that looks good...

See my vest, see my vest,
Made from real gorilla chest,
Feel this sweater, there's no better,
Than authentic Irish setter.

See this hat, 'twas my cat,
My evening wear - vampire bat,
These white slippers are albino
African endangered rhino.

Grizzly bear underwear,
Turtles' necks, I've got my share,
Beret of poodle, on my noodle
It shall rest,

Try my red robin suit,
It comes one breast or two,
See my vest, see my vest,
See my vest.

Like my loafers? Former gophers -
It was that or skin my chauffeurs,
But a greyhound fur tuxedo
Would be best,

So let's prepare these dogs,

Mrs. Potts: Kill two for matching clogs,

Burns: See my vest, see my vest,
Oh please, won't you see my vest.