The entire premise of this episode involves Steve & Roger trying to make Stan cry because Steve has never seen it happen. This contradicts the Season 1 Episode 5 "Roger Codger" in which Stan cries in front of the whole family when about to shoot Roger, even stating "What's this? Some kind of tear like substance coming from my eyes" to which Steve responds "He's crying!"
When Stan and Steve are standing in front of the Bottle Bash game at the county fair, the arrangement of stacked bottles behind them changes multiple times.