Other mistake: Lester's house is directly across the street from Cleveland's. However, when the Child Services agent runs out of Lester's house with Ernie, he runs at 2 o'clock direction (which would be towards Holt's house), but instead ends up in front of Cleveland's house, which is in a 12 o'clock direction. (00:11:20)
The Cleveland Show (2009)
1 other mistake in The One About Friends
Character mistake: When Cleveland sees Auntie Mama urinating in the toilet, we can see angle of where she is standing is totally different to where the toilet is. (00:06:50)
Cleveland Brown Jr.: Are you staying at your deadbeat dad's too?
Roberta Tubbs: Please, if I wanted to breathe toxic mold and get flea bites I'd date Zach Galifianakis.
Zach Galifianakis: It's gonna happen one way or the other.
Trivia: When the scuba diver dives out the window, he makes a very noticeable Wilhelm scream. (00:14:10)
Question: Why does Cleveland Jr look different to how he did in Family Guy?
Answer: In the episode "A Rodent Like This" Rallo discovers that Cleveland Jr. is actually a secret agent who is tracking down Tim, who is actually criminal. Jr. reveals that in order to get close he had to eliminate the real Cleveland Jr. luckily Cleveland doesn't pay attention so it was easy. Whether or not this is canon or not depends on the writers.