If you are from the United States you will no doubt have been given lectures about how much money you should be tipping bar and restaurant staff.
That might sound like a lot to us Brits, but when you see an example of just how much it means to those employees who rely on tips, you'll regret not tipping more.
A video uploaded to TikTok by @f.aa.ded shows her going through a recent payslip from her bartending job.
She explains that she gets paid $2.13 an hour and worked close to 71 hours a week, which would have equalled £150.81 for that week.
However, because she has to pay social care, Medicare and federal income tax through this payslip, she actually only earned $9.28 for 70 hours of work.
This is why you should always tip when you are in the United States, folks.
The video has since been watched more than 6 million times since it was shared on Twitter and people are aghast after learning the truth about how little service staff earn.