I used to repair outboard engines at an inland boat shop. Was training a new guy. Not very bright by the way. He had rebuilt the carbs on a big V-4. (Big for back then). Had it in the test tank. Back then we could just jumper cables to start the big ones. Hook up ground them hit the terminal on the starter. I was just watching him. He cranked it a bit but did not start. I suggested he use the primer bulb on the fuel hose. (Remember those). When he did that fuel ran out of the carbs. Thought to myself OH BOY! When he hit that starter with the jumper you know what happened. Then he ran screaming fire fire, right past the big CO2 fire extinguisher hanging next to the test tank. One quick blast the drama over but he was still screaming fire fire.

Maybe you had to be there but it was like a comedy.