A man in dressed in a Gumby costume attempted to rob a 7-Eleven store in San Diego on Monday, but had little success.

The would-be robber walked in and announced he was robbing the store, but the clerk thought it was a joke, according to Reuters. When the suspect tried to prove he was a robber and not a prankster by pulling out his gun, he could not fit his hand into his pocket. Instead, he only managed to drop 26 cents on the floor. He left the store without taking any money.

The San Diego Police Department is treating the incident as an attempted robbery and looking for the suspect.

Watch surveillance footage of the incident, courtesy of the Associated Press, below: