A group of philosophers once said "Late night, come home, work sucks, I know." And in that vein, we shan't be asked to go above and beyond for any reason. If it's not in the job description, it's by default, someone else's job. Want road lines painted? Sure thing, but don't expect them to be straight. That would require a "paint line straightener" position. Want a toilet installed? Can do all day every day. Just don't expect it to be connected to any plumbing. Congratulations on your new fashionable white chair that, by god, you better tell people isn't connected to plumbing before it's too late.
It's not that we're vindictive, horrible people. Well we are. We don't really like anything, we're petty, and we need to take a bath. But it's not like that's the prime motivation for misspelling stop signs and painting over light bulbs. It's just not my job, man.
For some more times workers lost the motivation to go above and beyond the barest of minimums, here are some more unprofessional "not my job" moments of failure.