A film production assistant has told an absolutely hilarious story about their first days on the job — and they really think they can direct this short film better than the actual director. Having worked as a film production PA as an intern numerous times, let me tell you, that job is not for the faint of heart. It's incredibly unglamorous and looks nothing like how Hollywood movies depict the task. You work very long hours — be on set at 4AM, leave at 10PM. You might not get anywhere near the…