Arnold's Hat/Stoop Kid - S1-E3
Continuity mistake: When Grandpa is telling Arnold about how how he tried to cover his head when his hair falls out, the camera cuts back to him with his arm on Arnold's shoulder and Arnold has his hat on, even though the whole story is about him losing his hat.
The Aptitude Test / Oskar Gets a Job - S3-E9
Suzie: I gave you 100 dollars two days ago.
Oskar: Suzie, you know I had to use it to pay the phone bill.
Suzie: Oskar, they cut off our phone service this morning.
Oskar: I know, it's a terrible mistake. We should sue.
Suzie: Oh, Oskar, that just doesn't make any sense.
Oskar: Tell me about it. So, can I have the 50 dollars?
Suzie: I don't have 50 dollars, we've already spent my paycheck this week.
Oskar: What about your overtime?
Suzie: I work 20 hours a week overtime already, how many more hours do you want me to work?
Oskar: How about 25?
Suzie: OSKAR!
Crabby Author / Rich Kid - S3-E17
Trivia: The book publisher's name is "H. MacDonald"; Hugh MacDonald is a layout designer.
Question: Does anybody know what year this show takes place? I've noticed that there are all these present day video games, keyboards, etc. on the show, but all the cars are old fashioned.
Answer: The show is based in present day times. Plus most cars aren't old fashtioned, I recall seeing a limo and not to mention a cherry picker, etc.