A good professor can change a student's life forever—unfortunately, so can a horrible one, but for all the wrong reasons...

People who work in the service industry deal with a lot of nonsense, but disgruntled customers, a.k.a Karens, are probably their biggest problem.

Every single class has at least one total jerk—but these teachers got to see karma absolutely destroy their worst students.

Most of us have had to help our parents out with a computer problem—but these Tech Support horror stories are a whole new level of stupidity.

Some people just don't know how to act at work. Discover some of the most unprofessional employees these Redditors have ever seen while on the job.

From entitled servers to psychotic Karens to unbelievable acts of kindness, we won't forget these insane customer service stories any time soon.

No one wants to hear the words "You're fired!"—but trust us, in the following examples, it’s definitely for the best.

The ER can be a wild place. From hilarious mishaps to dumb self-diagnoses, here are 50 bizarre and entertaining stories from doctors, nurses, and even some patients.

There's only so much that anyone can take. Eventually, everyone hits that point where you've got to say, "Screw it, I'm done".

After meeting some particularly dumb patients, these doctors of Reddit were left with the most shocking, amusing, and downright unbelievable stories.

We've all wanted to, but some people have the guts to do it. If we ever decide to quit on the spot, we hope our stories are as satisfying as these.

Doctors are expected to be professional. However, the sad reality is that some of them have no idea how to treat their patients with respect.