I remember back in the olden times we'd have to fuel Lears (back when Lears had tip tanks) and I think it was a mandate that you could only put 100 gallons (my memory is foggy so that number is likely to be incorrect) in one tip tank and then put fuel in the opposite fuel tank. If your truck only had one hose it was a huge pain in the ass, if your truck had two hoses and you were by yourself it wasn't quite as painful, if you had two people and a two hoses it was seamless. There was also the added complication of adding PRIST, it was an anti-icing additive that came in an aerosol can with a flexible tube that would be clipped to the end of the nozzle that would mix the product with the fuel as it was dispensed. There's always a "genius", one night the graveyard shift guy called in sick and the AM supervisor answered the call to cover that shift. He had a genius moment in the middle of the night, he needed to top off a Lear and he had a truck with two hoses and decided to put both nozzles into the tanks with the PRIST nozzles clipped and the aerosol cans jammed into the handles to keep the levers pulled. You can probably guess where this story is going. It was a mess, it just so happened when it all went wrong an airport cop was driving by and saw fuel spurting out of the tip tanks in a 3' geyser and a hapless line guy questioning his decision making. Happily we had, what was for the time, a fairly robust video surveillance system and we all got to watch this happen after the fact. This person kept his job. I also watched him get his ass blown off a ladder trying to clean the windshield of a Gulfstream that'd just parked and and marshall a Convair 580 wingtip into another Gulfstream. Decades later I was back at KBUR doing some engine work on a Falcon 900 and guess who I ran into? Same dude, but he had no ambition regarding aviation back then, it was just a job so he could pursue his acting career, and now he's running the place and all of his dreams have been shattered and recalibrated. Don't get stuck in that job, it's a stepping stone to other things not a career.