Not the person you're replying but I've worked as a dishwasher and what he/she says about ease of switching jobs is spot on. I did a lot of other menial jobs too before I got a degree. Construction laborer was my favorite but janitor wasn't bad. Unless you have a really interesting criminal record it's super easy to bounce between menial jobs. Go on Craigslist, fire off a "resume" (in quotes because it's more of a work history than anything else) to anything that looks tolerable and roll with whatever replies you get back. There was one time I told a boss to shove it on one day and showed up to a different job the next but that was the exception not the rule. I suspect if anything it's easier now. The economy was not as strong back when I was working those jobs.

Edit: I can write an email with proper grammar, show up on time and can pass a drug test which I know now are two of the major pain points for minimum wage employers so I guess I was privileged in that regard.