It's generally frowned upon in most industries to quit a job without giving at least two weeks' notice. Quitting a job on the spot and walking out in the middle of a work shift, as tempting as it may be, can burn a bridge with your employer resulting in potential problems getting at a new job.
But we all have our limits. And when a job pushes you past yours, sometimes you gotta do what you gotta do. And the satisfying feeling of quitting a job on the spot could be well-worth any potential fallout. In a popular Reddit thread, someone asked: "What made you quit a job on the spot?"
1.) From Minimum_Reputation48:
I got mugged on a delivery for dominos, and came back to the shop crying and panicked, had my phone, wallet, and pizza taken, told my manager what happened. “[My name], are you hurt?” “No, but I lost my phone and wallet, I need to call the police” “No time for that, here’s your next delivery.” (It was like 2 blocks from where I was just mugged)