In an amazingly frank post on reddit, the user explained that the child was screaming and demanding pie from his mother, who was on the phone and ignoring him completely.
He said: "This kid was out of control, screaming, punching his mother, throwing around a gameboy whenever something didn’t go right in the game.
"She gets up in my face telling me I can’t tell her nothing about raising her child and to mind my own business," he goes on, saying that he asked the mother kindly to settle her child down after he screamed: "I want some f***ing pie!"
SEE: COULD THIS BE THE MOST HILARIOUS / INAPPROPRIATE DRAWING A CHILD HAS EVER DONE?
The poster then decided to ruin their day.
"I ordered every pie they had left in addition to my burgers. Turned out to be 23 pies in total."
Amazing.
READ: ADORABLE 6-YEAR-OLD SHARES HIS TOP TIPS FOR WINNING THE GIRL OF YOUR DREAMS
The poster finishes his confession by saying that as he left the Burger King, he heard the woman shout: ‘What do you mean you don’t have any pies left, who bought them all?’
"I take my order and walk towards the exit. Moments later I hear the woman yelling, what do you mean you don't have any pies left, who bought them all?
"I turn around and see the cashier pointing me out with the woman shooting me a death glare. I stand there and pull out a pie and slowly start eating eat as I stare back at her.
"She starts running towards me but can't get to me because of other lineups in the food court. I turn and slowly walk away."
READ: MUM PUNISHES 'SPOILED BRAT' DAUGHTER BY SELLING HER KATY PERRY TICKETS ONLINE
It sounds like the end of a movie, doesn't it? We desperately want to meet this guy...
UPDATE: The original post has since been removed, but can be found written out further down the reddit page by user astroskag.
Image of child taken from the Vicks First Defence advert.