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)
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.