An alarming number of elderly people are mistakenly tagging themselves as hip-hop pioneer Grandmaster Flash thanks to Facebook's auto-tagging feature.
The error causes anyone that starts writing 'grandma' to be presented with a link to the Rock and Roll Hall of Fame inductee - and the number of grandparents falling victim to the algorithm failure is endless.
Here are some of the funniest examples sourced by the Tumblr page Love, Grandpa and Grandmaster Flash:
The craze even caught the attention of the Grandmaster, real name Joseph Saddler: "It's true I get a lot of posts from Grandmas. Hilarious now I know why --- Respect Grandma and Grandpa. P.S. This is Hip Hop!"
Sam Moore is a culture writer from the UK, writing mainly about film, TV and music for the likes of The Guardian, GQ, The Independent and many more. He is currently working on a book about the making of Peter Jackson’s Lord of the Rings trilogy.
