Bartenders are known for their fast-paced movements behind the bar serving slings and drinks.
But a clever bartender has a tip for when a patron tells you your drink isn't strong enough.
The coach, who uses the handle @soberbartender19 on TikTok, shared the hack in his viral video.
"Teach newcomers how to deal with 'not strong enough'," reads the on-screen text.
A bartender puts a drink in the bar with a straw.
"Look at this," the coach appears to be training the bartenders.
He could then reach for a bottle of liquor and pour it through a straw, giving the drink a strong alcoholic flavor.
This video has over 5.2 million views of him.
Viewers have mixed feelings about Coach's hacking.
"If you want to be strong, ask for a double," he commented by one.
"My favorite bar trick," wrote someone else.
"I was just flipping the straw! Strange," another commented.
"Add a splash to the top of the drink if there is no straw." wrote another scammer.
Some people say they don't want to taste the alcohol in their drinks.
"I didn't understand this at all. I don't want to taste my alcohol," said one.
But one commenter seemed to have the ultimate piece of advice for bar patrons.
"I always go to the bar with cash to make sure his first two tips are large. will be available,” wrote someone else.
The coach replied: "It always works."
