Even though Chowder eats more Flibber-Flabber than anyone in "The Flibber-Flabber Diet", he only gains weight, despite Flibber-Flabber being stated to reduce weight when eaten in large amounts. Truffles, meanwhile, who has difficulty keeping it down, loses a pound. This implies that the reason people on a diet of Flibber-Flabber lose weight isn't because that's what Flibber-Flabber does, but because it's so incredibly disgusting that you don't eat as much.
It can also be a lesson that eating too much of any sort of diet food can have the opposite effect.
In one episode, Truffles mentions that she has fibromyalgia. Fibromyalgia is an illness that, among other things, is characterized by chronic pain. No wonder she's so cranky.
In "The Moldy Touch", Mung tells Chowder that he once let Fungol use him because he wanted to impress his cooking master. Then in "Won Ton Bombs" we find out that his cooking master had deemed him a "failure for life" when he was young. No wonder Mung wanted to impress him - he was trying to redeem himself for his failure.
In the same episode, Mung fights Fungol using yeast. This is because mold and yeast are both types of fungi.
When Schnitzel quits, Mung replaces him with a man named—and made of—Tofu, a common meat substitute. Schnitzel is a type of sausage, ie a meat-based dish. Tofu became a meat substitute once again.
Have you always wondered why Chowder avoids Panini? It's because both her and chowder are around 7-10 years old. That's too young to have a relationship like Panini wants.
Uhh, it's probably moreso the fact that because they're young that Chowder thinks like a child. He doesn't want a relationship with Panini because he thinks she's gross or something- like a child would.
Notice that Gumbo and Mung Daal scream in disgust when introduced to the Baby Minotaur in "Deadly Maze". It is possible that this is because the Baby Minotaur is an entirely CGI character, and a CGI character in an entirely 2D animated universe, Marzipan in this case, is entirely out of place. Not to mention that the Baby Minotaur looks like something from the Uncanny Valley.
Panini's growing intensity in her crush and pursuit of Chowder might actually be because of her taking after Endive. It's been hinted over time that despite Endive's dislike of men, she is very frantic and dogged in her affections. After Schnitzel runs away from her, wording implies that it's not the first time it happened.
This could mean that Endive is unaware that she drives away her would-be romantic interests with her Gonk looks and her very forward pursuits.
In "The Apprentice Games", the guards declare Chowder and Mung illegitimate competitors. The reason is simple: they just saw Chowder barely make it up the stairs, and were protecting him from any further over-exertion given how fat and out-of-shape he is.
Chowder and Panini are the same species with some likely sexual dimorphism going on. The reason why Panini is attracted to Chowder in the first place is because they're the same species.
B) Gazpacho makes Chowder sign a waiver saying he wasn't responisble for his death. Funny enough, but at the end he sounds like he "killed" many other children before. Add in the contract and the possible Norman Bates interpretation and you get one really creepy friend of Chowder's.
Speaking of Gazpacho, no one has ever seen his mother, but he spends most of his time talking about her, and how she puts him down. His mother may be dead, and he constantly talks about her as his only means of remembering her and coping her loss, he even dressed as his mother at one point, not unlike Norman Bates from Psycho.
Actually, we do see her once, in the episode "Gazpacho!", but she is only seen from the back and the view is somewhat blurry.
However, after it's revealed that Gazpacho's mother might be just him in drag, the things he says about her now range from just awkward to downright disturbing.
If Mung hadn't stopped Atlas from eating the Burple Nurples than it would have destroyed Marzipan.
In the episode "Grubble Gum", Chowder chews a piece of grubble gum and hears a faint screaming, but brushes it off. Towards the end of the episode, a giant ball of grubble gum consumes everyone in Marzipan, which is then unwittingly consumed by yet another Chowder. The citizens of Marzipan have been locked in a time loop which ends in them being chewed and, given their size compared to Chowder, more than likely digested whole and alive.
Which would make the monkey's suggestion to "end the show now" that much more logical.