A row kicked off on a packed Southern train service when a mum and baby sat in a first class seat.
When the mother - who was wearing her young baby in a sling - asked another passenger to move a bag so she could sit down, the elderly woman questioned whether the mum had the right ticket. Fellow travellers in the first class carriage soon joined in, and the entire scenario was captured on video by Tyrone Williams, who later posted it to Facebook.
Facebook, Tyrone Williams
"I asked you nicely to put your bag on the floor and I offered to put it up," said the angry mother. "I’m carrying a baby... You have to respect me."
This angered the woman even more, who replied: "You have to respect your elders and betters. People have actually paid to sit in this carriage," before adding that she didn't want to sit next to a "screaming baby" despite the fact that the baby was quiet throughout the whole exchange. The mum shot back with "he's behaving better than you!"
While the mother never confirmed whether or not she'd actually bought a first class ticket, she pointed out that the seat she was sat labelled a priority seat, which meant it was reserved for disabled or pregnant people or those with children.
But another passenger pointed out that to sit in the first class section, she should still have the correct ticket.
Someone else disagreed, saying "she's got a baby, she can sit where she wants".
The video of the argument quickly went viral, and a Southern spokesperson was contacted by another publication.
In a statement, they said: "Our priority seats are available in both standard class and first class.
"They should be given up if they’re needed more by people with disabilities, expectant mothers, elderly passengers or those carrying infants.
"Passengers using priority seats in first class should still have a valid first class ticket unless first class has been declassified due to disruption."
What do you think? Does it matter what ticket you have if you need to sit down with your baby? Tell us over at Facebook and Twitter