At dinner, Dewey has rice, green beans and a bread roll on his plate. While Reese does his burping voice, Dewey's bread roll disappears from his plate and a bread roll appears on a side plate to his right. However, when he gets up to dance for Patty there is no bread on his plate.
One of the traps that the boys set up for their babysitter is a towel covering the opened hatch that leads to the septic tank. In season 7 however, it no longer exists and instead becomes an atomic bomb shelter.
At dinner, while Reese does his burping voice, Malcolm's right wrist is on the table then off the table between shots.
At dinner, Dewey says:
"I can dance."
He has a half eaten bread roll (despite not taking a bite). When he stands to dance, there is no bread roll on his plate.
At dinner, Dewey says:
"I can dance."
He gets up to dance and his knife & fork are on a napkin to the right of his plate. When viewed from behind Dewey, there is no napkin to the right of his plate and the fork has moved to the left of his plate.
Some (but not all) delegates at the convention wear name badges. We would expect ALL visitors & sales agents to have name badges.