Bugs Bunny's business card says "knows all- tells all" but on a sign outside Bugs Bunny's business it says "knows all-tells everything ".
When Brody enters Bugs Bunny's room before he gets his palm painted red his hat gets knocked off his head and on to the floor. In the next shot the hat has disappeared.
When Bugs Bunny paints Brody's hand with the red paint, the paint is gone in subsequent shots.
When Bugs Bunny lays out the playing cards for Brody, the cards are all blank.
In the next shot the cards all have suits (diamonds, hearts, clubs and spades) on them.
As the scene flashes back to 1886, a large sign on a building reads HAD ENOUGH? VOTE FOR GROVER CLEVELAND. At that time, Cleveland had been President for at least a year.