Police had to intervene after a childish bagel prank infuriated passengers so much they turned violent.
A rowdy group on the train, believed to be from Glasgow to London, started placing bagels on other passengers heads and chanting "you've got a bagel on your head."
But scenes soon turned ugly when people started retaliating, firstly a blonde woman who had to be held back and then a spectacled man who hilariously starting throwing the breaded treats out of the window.
Then that's when it all kicked off... watch until the end.
It is believed the train was travelling from Glasgow to London when the incident took place.