Mooney speaks Italian quite well. He says he "picked up a few words in the Army."
Goof: As Umberto races into the cleaners to rescue Lucy, he pushes the vat of green dye and it moves quite easily. If it was actually full of liquid dye, the weight would prevent it from moving at all.
(trying to figure out how to get into Oscar's Cleaners)
Lucy: Viv! Look! Oscar left his skylight open!
Lucy: Have we still got that tow rope in the back of the car?
Viv: We have. And not on your life!