• Carl's hat reverses color as he starts to leave the parking lot.
• Joe is clearly seen sitting in a standard car seat in his patrol car when he receives the disturbance call, but rolls out already in his wheelchair when he arrives at the Quahog Community Center.
• When Peter and the alcoholics are singing "Mr. Booze", Joe clearly is right in front of the door when he comes in. But in some scenes, notably when Carl approaches the front, he isn't there.

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