I love what that episode had to say. Belson's mother essentially indulges the heck out of him and refuses to discipline him. He essentially gets everything he wants, and as a result he's a jerk and forces kids to hang out with him because he demands friends. His mother prepared that loving meal for the sleepover guests that one time, and Belson pulled out that cheap box of cereal for himself.
Meanwhile, Belson has since lost his small amount of favor with the kids, probably causing him to act out more and become even more entitled at home. His mother finally found a way to get to him and punished him properly (up until the end when she took it all back). We've seen Belson act like an idiot trying to be as popular as Clarence last episode and that was a good comeuppance. This time, he really got it. Not in the falling through the skylight to prank someone and end up with Clarence in the emergency room sort of way, but a deeply satisfying act of parental justice.
And high praise on how Mary cleaning everything before the maid getting there was handled. Marge Simpsons did the same thing, but only as her usual role as the overly housewify housewife. Here, we had a Middle Middle to Lower Middle income single parent family that doesn't know what to make of having a maid. She even sits down and talks to her about why she cleaned everything up before hand. Another nice contrast between Clarence and Belson. Clarence has a better relationship with his mother, and that leads to Clarence willing to help, though under a guise of a game.
Oh... and love the Jimmy Heart cover of the Super Mario Land overworld theme. They did their research on that one. Mario is really over-referenced and all. Nice someone found a more obscure angle.