Carol tells Mike that the pool table should go in the garage. The Bradys do not have a garage. Later, she says "the carport".
When Bobby is talking with Cindy in front of the pool table, the arrangement of the balls changes between shots.
There are five pool balls and the cue ball on the table and Bobby is about to take a shot when Cindy rides up and starts to talk to him. In the background, a shot and a ball going into a pocket are heard. Yet, when Bobby is shown again, there are still five pool balls and the cue ball on the table.
Bobby bets Greg and Peter in a game of 9-ball. In this game, all balls must be pocketed in sequential order from the 1-ball to the 9-ball, unless there is a combination shot. Bobby beats Greg and Peter without them getting a shot. However, Bobby pockets the 6-ball while the 3-ball is still on the table. There was no combo shot, so the cue ball should have been given to Greg and Peter to place anywhere on the table as a penalty.