- Alternate Character Interpretation: Peter and Fudge's parents have gotten some flak for not punishing Fudge for eating Peter's pet turtle. That said, considering the fact that that act resulted in Fudge being hospitalized, with attempts made to make him either vomit or pass the turtle, and the possibility that Fudge would have had to go ''under the knife'' had those attempts failed, odds are they thought he'd been punished enough and that any additional punishment would have just been salt in the wound.
- Foe Yay: Peter and Sheila.
- Heartwarming Moments: Considering how they usually don't get along, Peter standing up for his little brother against his strict kindergarten teacher who doesn't approve of Fudge's nickname is pretty sweet.
- I Am Not Shazam: Fudge's name appears in every title since Superfudge although Peter is the one narrating the books.
- Narm: Probably justified considering that Peter is still a kid and therefore might not have full control over his emotions yet, but in the first few chapters of Superfudge he threatens to run away from home multiple times whenever something happens that he doesn't like (getting a little sister, moving to New Jersey). His mother even calls him out on how he can't run away every time something happens that he doesn't like.
- Nausea Fuel: Fudge swallowing Dribble, a live turtle, whole. And then being fed prune juice and milk of magnesia (among other things) over the course of a few days in order to get the turtle out. And this was all taken from a real story that one of Blume's friends alerted her to.
- Retroactive Recognition: The TV adaptation for "The Birthday Bash" had Fudge's friend Jennie played by a young Brenda Song.
- Toy Ship: Fudge and a girl named Mitzi, in Fudge-A-Mania. They're about five, and tooth-achingly cute whenever they're in the same area.
- Values Dissonance:
- Fudge kicks his kindergarten teacher hard enough to bruise her shin. This happens in Superfudge which was written in (and presumably set in) 1980. Now picture what would happen if Fudge did this in the post-Columbine USA school environment - especially where police have handcuffed kindergarteners without a second thought.
- A couple times in Tales of a Fourth Grade Nothing and Superfudge, Anne spanks Fudge and it's portrayed as acceptable punishment, as it was when both books were published (1972 and 1980 respectively). Nowadays, it would cast her in a very judgmental light if not also be explained as what models his bratty behaviour.
YMMV / Fudge