Pardon My Backfire (1953)

The Stooges' 10-year engagement to their fiancees has reached the end of their future father-in-law's patience. He gives them one week to earn enough money to marry his daughters, or they'll be promised to the three plumbers down the street. So Moe, Larry & Shemp promise to keep their garage open night and day if necessary. The garage's first new customers are three gangsters, and the leader's moll, who've wrecked their car escaping from the police. Assuming that the Stooges have made a overtures to the moll, the hoods decide to 'silence' our heroes.