Police were called to break up a fight on a train as rowdy passengers repeatedly placed bagels on other travellers' heads.
Officers arrived at Potters Bar station in Hertfordshire just after 1am on Sunday after being alerted to passengers fighting and intimidating others.
The 00.54am Great Northern service from King's Cross to Huntingdon was held for 18 minutes while the officers took statements before the train continued its journey.
A video on Twitter, which has been liked more than 17,000 times, showed bagels on top of two passenger's heads.
Female passengers appear in the footage placing partial and whole bagels on the head of the man sat in front of them.