When Rebecca Wyn Owen from Gaerwen in Wales sent her mother, Lana, a photo of her face distorted by one of the many editing apps out there, she just thought they would get a giggle out of it and move on.
But her very trusting mam instantly thought something terrible must have happened.
In a series of gas (and sweary) texts posted by Rebecca on Facebook, her mam tries to get her to go to the doctor as something has clearly gone very wrong - her daughter now has a square head!
She's beside herself with the worry, proposing several possible explanations - a drunken fall, a drug called 'magic' and, er, salmon paste. And, of course, Rebecca can't help but keep the joke going, even posting a second photo of her disfigured face.
After repeated requests for her to go to the doctor, Rebecca finally tells her mother what’s going on and scolds her for being so gullible.
But it's clear from their messages that this isn't the first time she's pranked her mother.
Unfortunately for Rebecca's mother - but fortunately for all us - the texts have gone viral since they were posted yesterday morning. They've been shared over 5,400 times.
It's alright, Lana, we don't think you're 'thick'! Just a bit too trusting of your messer of a daughter.