When Lily crunches Moe's foot, Shemp's hair changes from messy to neat between shots when he walks up to her.
Moe accidentally hits Larry in the eye with a pair of scissors, even though he was supposed to hit them on his head. Shemp ends up unintentionally hitting Larry in the same eye, seconds later while getting his hair pulled on by Moe.
After Mugsy punches his fist into the cage covering Shemp's head, the crunching sound effects come in too late.
The character Mugsy is known as Red by Lily, even though his henchman call him Lefty.