This British father thought he was outwitting his teenage (but hopefully over-18) daughter when he pulled this prank on her.
Suspecting his daughter had stolen his favourite biscuits, he went looking for them in her room where he discovered a bottle of vodka she was saving for her night out.
As revenge, he decided to replace the vodka with water. Because that's good parenting?
Unfortunately for him, the plan backfired quite spectacularly.
Posting as Bob_slefty on Reddit, he writes:
While you might rightly think this all a bit suspicious - why would Tesco just replace the vodka?
To banish any doubts people might have, he updated the post with a picture of a letter that Tesco Customer Service in Dundee, Scotland, then sent his daugher apologising for the inconvenience.
Looks pretty legit but, of course, these kinds of things can be faked. The dad writes that he has since told his daughter what really happened and she has promised to stop stealing his biscuits.
So all's well that ends well, we guess.