When Charlene feeds Baby from the bottle, she holds it at about 45 degrees. In the close-up, she holds it at about 90 degrees. This mistake happens in reverse when she puts the bottle back in his mouth.
When Earl hands Baby the frying pan, Baby hits him with the flat side and the back of his hand facing Earl. When the frying pan is then shown sitting on Baby's lap, the concave side and the back of Baby's hand both face up (the flat side should have been facing up.)
The pen Fran is signing checks with in the beginning has no tip.
After Zabar puts the moldy bread in Baby's mouth, he pulls the whole chunk away, indicating that Baby did not actually bite anything off.