Continuity mistake: When Cleveland first sees Tim, Holt and Lester outside, they are standing side by side parallel to the porch. When Cleveland goes outside, they are standing perpendicular to the porch. They are standing side by side parallel again when they show him the suit. (00:03:05)
Continuity mistake: When Donna first shows Cleveland Roberta's college fund, her hand is covering the "Fund" part of the "College Fund" label. The next shot shows almost the entire label covered by her hand. (00:02:35)
Continuity mistake: Cleveland throws two cushions on the floor and tells Donna he has gambling fever. When he throws the cushions down and falls back, the first cushion has an extended part to Cleveland's right. In the shot after Cleveland falls onto the cushion, the extended part has moved to the top of the cushion. (00:01:10)
Continuity mistake: In the girl fight scene, Jane puts her foot on Donna's neck. In the next shot, the angle of the foot changes. (00:18:40)
Continuity mistake: The position/distance of Holt and Cleveland's beer bottles change at The Broken Stool. (00:03:10)
Continuity mistake: When Cleveland is vomiting at the table, some of the vomit goes over his food. That's the only vomit that goes on the table. In the next shot, the entire table is suddenly filled with vomit. (00:15:15)
Continuity mistake: When Auntie Mama arrives, her bag is a light blue color. 2 shots later, the bag is now a dark blue color. (00:05:00)
Continuity mistake: In the wide shot of the fight, Rallo is sitting on the couch. When Donna, Roberta and Rallo say "Auntie Mama", Rallo is suddenly standing next to Donna and Roberta. (00:05:00)
Continuity mistake: Cleveland smashes a bottle to defend himself with. In the wide shot, all of the smashed glass disappears off the ground. (00:04:55)
Continuity mistake: Cleveland drops a spoon Junior throws at him. It disappears a few seconds later. (00:04:55)
Continuity mistake: Cleveland takes the photo album off his dad and his dad gives him the dirty look. Cleveland drops the album but disappears in the wide shot of people fighting. (00:04:45)
Continuity mistake: Roberta goes to leave the house and she starts a tug of war with Donna. They are standing next to the door in this shot, but standing next to a table about 15 seconds after. (00:04:45)
Continuity mistake: Cleveland's beer bottle suddenly appears in his hand in the shot after he says "Poor, fat Kendra".
Continuity mistake: Cleveland goes outside in The Hurricane and gets blown all over the place. Yet reporter Dwayne Meighan is shown reporting the news outside in The Hurricane and is totally unaffected by it. (00:05:40 - 00:06:10)
Continuity mistake: The amount of snow in the window keeps changing when Rallo first meets Murray.
A General Thanksgiving Episode - S4-E3
Continuity mistake: General Ritcher says Holt couldn't join the army because he has to be 5 feet or taller, indicating that he is shorter than 5 feet. But in the video Holt made of why Cleveland should take him to the ball game in the episode "A Short Story and a Tall Tale", Holt said he was 5 foot 3 and a half. (00:20:20)
Ain't Nothin' But Mutton Bustin' - S2-E10
Continuity mistake: The bullet hole in the Waterman Cable van at the start changes position between shots.
Another Bad Thanksgiving - S2-E7
Continuity mistake: When Cleveland reads Holt's twitter updates there is a leaf on the staircase banister behind him. In the next shot, the leaf has disappeared.
Continuity mistake: Ernie's position keeps changing in relation to Junior at the first election. (00:04:50)
Continuity mistake: When Cleveland says "We were just at work and it was just so boring and humdrum...", Tori is looking at Cleveland and Donna. But when the video is played later, when Cleveland says "humdrum", Tori is looking away from Cleveland. (00:08:10 - 00:09:00)
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.