When someone has only one job, it's difficult to mess it up that badly. You'd think advertising agencies wouldn't put their own ads upside-down or that the people repairing the road would at least move the cones out of the way before pouring concrete, but real life is often disappointing. We all know deep down that the people who did this faced no repercussions for their actions, but now we have to suffer the consequences, which are pretty hilarious.

Imagine training for years for a career only to do something very simple so very wrong, then look at the results, say "Yeah, that's fine, I can just leave it like that" and then go about your day as if you've done your job perfectly. That's what the people behind each of these fails have done, and they deserve to be shamed for it. Here are some of the funniest times people messed up the one thing they were supposed to do right.