At some point everyone has either waited tables, or at least had the pleasure of being served at a restaurant. Let's face it, sometimes it's not so pleasurable --either for the server or the served.

But does apparent bad service also deserve a lesson on how to do your job?

The following note was posted on Reddit by someone claiming that a friend of a waitress supposedly received this note after serving a customer.

It reads:

Waitressing 101

Don't tell every customer you're very busy to excuse your lack of serving skills. Your job is to attend to us, not make us feel like we're an inconvenience. A little bit of personal attention goes a long way in the form of a tip. Just my two cents.

The customer left two pennies for their "trouble."

Cruel tipping stories are hardly new. A Seattle bartender was not only stiffed on her tip by a customer, he also insulted her by scrawling on the receipt: “P.S. You could stand to loose (sic) a few pounds.”

That prompted the bartender to post a picture of the receipt on her Facebook page, along with the customer’s name, Andrew Meyer. Soon, angry readers found and re-posted the so-called dead-beat tipper's Facebook page --but it was the wrong Andrew Meyer. It was bad all around.

Then there was the incident of the receipt showing a 1 percent tip and the handwritten "get a real job" note. A person who called himself a banker reportedly left a $1.33 tip on a $133.54 bill, and left a note telling the server to "get a real job".

It apparently was a hoax. According to TheSmokingGun, the restaurant where the bad tip was purported to have been left found the actual receipt. Rather than a bill of $133.54, the receipt showed a $33.54 bill, and a tip of more than $7.

While it's unclear if the two-cent tipper is real or if two cents were left, the note taps into a frustration we've all had at some point while being the brunt of bad service. Is the note a teaching moment, or its author just a jerk? Let us know what you think.