head-spinningly

“Marge Gets A Job” is just about perfect. There is not a wasted sequence or unfunny gag. It’s head-spinningly smart in a way that doesn’t call attention to itself—like setting the retirement party at The Spruce Caboose, a giant, unwieldy, trainwreck-themed eatery whose name and conceit are brilliant parodies of Howard Hughes’ giant wooden airplane, the Spruce Goose.