A Hash House Fraud is a 1915 film short (16 minute) directed by Charley Chase featuring the Keystone Cops.
The action takes place at the Busy Bee Beanery, a small cafe where a notice asks "Don't Flirt with the Cashier".
The cashier is chewing gum and the customer gets her to stretch it far enough that he can steal a bit to eat.
The owner calls the chef and hits him with the food when he appears at the serving hatch.
The owner brings back enough men to fill the cafe, offering them a free meal.
A prospective buyer and his wife are fooled into thinking that business is good and offer to buy the cafe.
The cars pass each other repeatedly then the roadster hits the end of the pier and owner and cashier are thrown into the sea by the inertia.
The Cops the chef the buyer and his wife assemble on the pier and throw the cashier a lifeline.