Continuity mistake: When Donna "frapps" Cleveland, there is Frapp on the floor. Cleveland then slips on the Frapp and it disappears into the grass. Two seconds later, it reappears on the ground. (00:08:20)
Continuity mistake: When Cleveland gets hit with the American football when he walks into Waterman Cable at the start, he is standing next to the entrance door. In the next shot, he is suddenly standing at least 20 feet away from the door. (00:02:00)
Continuity mistake: Junior's inflatable scout pants go over the waterfall twice when he saves Rallo. (00:19:35)
Continuity mistake: The tree the scuba diver is impaled on changes size between shots when everyone runs out of the courthouse. (00:14:40)
Continuity mistake: When Cleveland and Donna notice Rallo has disappeared out the window, the window changes size between shots. (00:14:20)
Continuity mistake: When Cleveland and the Child Services agent are hiding behind the couch during the gunfight, the bullet holes in the wall next to them change position between shots. (00:18:45)
Continuity mistake: At the start of the meeting, Ernie is wearing no socks. But when Lester says "I ain't leaving with out my son", Ernie suddenly is wearing socks. (00:17:15)
There Goes El Neighborhood - S3-E9
Continuity mistake: When Junior and Cecilia are talking in the cafeteria, a boy with a blue waistcoat can be seen in the shots of Cecilia. The boy is eating a sandwich, and has a cup on the tray in front of him. In the shots of both Junior and Cecilia, the boy has no tray in front of him and is holding a milk carton instead of a sandwich. (00:08:45)
Continuity mistake: When Junior starts singing and Cecilia joins in making them a duet, the shot cuts to Cleveland. After this it cuts to a wide shot where we can see Cleveland doing nothing. In the next shot, he's suddenly finished drinking from a glass. (00:11:00)
Continuity mistake: Junior isn't able to fit through the door after returning from Choni's Cantina (the first time). Yet Junior is able to fit through the door in other episodes. (00:04:15)
Continuity mistake: Ms. Eck shows Roberta her grade and she says it's a C minus. However, the paper shows the grade is an E minus. (00:04:00)
Continuity mistake: When Cleveland Junior walks into the locker room to see his locker has been broken into, the door behind him is open. Two shots later, the door is now closed. (00:15:05)
Continuity mistake: In the 1984 flashback, when Cleveland chases Wally, Wally trips and drops his computer. When this happens, the computer goes off screen. But in the next shot, all the damage from the computer is right next to him. (00:01:40)
Continuity mistake: When Cleveland notices the family and neighbours are there for his intervention, we can see Arianna and Holt standing right next to each other. In the next shot, Arianna is in visible but there's no sign of Holt. He was too close to Arianna to be out of frame. (00:09:35)
Continuity mistake: When Cleveland sees everyone in his bedroom, Arianna's bracelet changes which arm it is on between shots. (00:09:35)
Continuity mistake: When Cleveland walks into the kitchen after being gone for two days, Robert's plate is full of breakfast. A couple of shots later, Robert's plate is nearly empty without enough time to eat the food on the plate. (00:06:40)
Continuity mistake: Francis the Possum scratches Kendra on her face. Yet when we next see her, her face is unscratched. (00:13:55)
Continuity mistake: Black History Month begins when the time on the clock reads 12:00. When the shot ends, the second hand on the clock shows 4 seconds. But 9 seconds later, the clock now shows 44 seconds. (00:00:15)
Continuity mistake: When Cleveland and Roberta are about to leave the house in the car, Rallo's car seat is seen in the back of the car. But by the time the car leaves the house, Rallo's car seat has disappeared. (00:08:20)
Continuity mistake: When Cleveland finishes his toilet bar, the tools and blueprints on the floor change position between shots. (00:12:40)
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.