An important tip
Tipping is essential for waiters since this may be the sole money they make at times, but it’s often preferable not to tip because of how awful the service is. When these folks got terrible service at the pub, they debated whether or not to leave a tip and came up with an inventive solution.
While they ultimately did the right thing and left a tip, they made sure the waiter received their message that the service was terrible: They placed the cash in a full shot glass, meaning that the bills would be wet, and if he tried to pull them out without making a mess, he can’t.