Burke decided to give his mom a sweet yet slightly embarrassing surprise by announcing the special occasion to their fellow passengers.
"It's my mum's birthday today; she's 64," Rob said.
Not happy with her son sharing her age, Jackie joked, 'Oh shut up, tell the bleeding world, why don't you".
Happy to oblige, the passengers ended up singing the familiar tune, and it clearly made the birthday girl's day.
Watch the video above to see the sweet moment.
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