The vast majority of us have, at some stage in our lives, tried to hide the fact we're ever so slightly intoxicated from our parents.

Whether it was sneaking up the stairs before passing out behind the shower curtain at 18 or feigning surprise at the number of gins we got through after Christmas dinner at 25, protecting your parents from your vices is just something you do.

And our thoughtful nature in this regard means that the notion of being wrongly accused just doesn't sit well with most of us… including poor ol' Rachel Gelmis from the United States.

Having been subjected to a drug test at her high school four years ago, officials asserted that the then 16-year-old Rachel was positively chock-full of illegal drugs – heroin, meth, pot and cocaine… the works.

Except she wasn't.

"I was freaking out!" Rachel told BuzzFeed. "I was so scared. I kept racking my brain for a reason that I might have tested positive for everything, and I had no idea.”

After being forced to choose between rehab options with her parents, the school eventually fessed up and admitted they had completely misread the teen's results.

So, Rachel's mam did what any upstanding mother would do in that instance – she poured her heart out through the medium of baking.

In other words, she apologised with the help of a lot of blue icing.

And in a throwback move this week, Rachel decided to share an image of the dessert with social media users, writing: "That time my mom genuinely believed I was doing every drug at once bc my idiot school misread my drug test."

Humble pie much?!