A teenager from Liverpool was left needing a six-hour operation after copying a dangerous TikTok trend.
The girl, 13, had to have her appendix and part of her bowel removed because she had swallowed 15 ball bearings.
The hazardous trend involves placing magnets on either side of the tongue to create the appearance of a piercing.
The girl's mother, Faye Elizabeth from Rainhill, told the Liverpool Echo that her daughter had complained of stomach pains and started vomiting.
She said: "The pains got worse so I took her to Whiston Hospital. They thought it might have been her appendix at first.
"Then they ruled that out and thought it might have been gastroenteritis until she started vomiting black stuff.
"They did a scan and found 10 of the ball bearings."
The teenager was transferred to Alder Hey Children's Hospital, where surgeons removed all 15 magnetic beads from her internal organs.
She has been left with a six-inch-long scar and is continuing to recover in hospital.
Ms Elizabeth said: "They had to take part of her bowel away and re-stitch it. There was one stuck in her appendix so they had to remove that."
"I don't know when she swallowed them because she didn't admit at first to doing it. I think she was a bit scared of admitting what she'd done.
"Apparently she watched a TikTok video where there's a trend that all the kids are doing at the minute.
"I haven't actually seen it but she told me about it and a lot of other children her age have seen it.
"They put one of the beads on top of their tongue and one underneath and it makes it look like their tongue is pierced.
"And then she saw one where they put a big bead in the side of your cheek and put little beads on top of your cheek and you move it with your tongue so they move on your face.
"They're magnets but because they're so small they're easy to swallow."
The teenager will have to stay in hospital for another week or two while she recovers from the operation.
Ms Elizabeth says she had never seen her daughter in so much pain and is now warning other parents to be aware of the consequences of the dangerous trend.
