A five-year-old Man City fan's x-rated comeback to his dad's United supporter friend is quite simply incredible.
Take a look at the child's hilariously brutal response below:
As a United fan writing this, you know the state of the club is bad when a child, who supports the blue side of Manchester, tells you exactly where to go.
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Kyle Boland, 37, was in the shower when his mate Danny Bunting, 45, dropped by the house earlier this week (October 16).
His son, Billy Boland, who is only five-years-old, opened the door in his Man City shirt alongside his sister Lily-Mae Boland, 12.
While wearing a United tracksuit top, Danny is seen - via doorbell footage - having a bit of banter with the young lad.
He said to Billy: "Tell your dad you'd look better in a United shirt."
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To which the little kid brutally replies: "Tell your dad United are s**t."
After a very brief moment of shock, Billy leaves Danny in hysterics.
The City-mad father said he couldn't really have a go at his son for swearing, because he's 'got it from him' while, joking it was a 'proud dad moment'.
Kyle, from Flixton, Greater Manchester, said: "It's a proud dad moment. He's definitely learned that from me.
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"Danny's a massive United fan and he was dropping an invitation off for me but I was in the shower so Billy and Lily-Mae answered the door.
"When I got out they were arguing and Lily-Mae told me Billy had just swore at some man at the door. I asked who and why, then I saw the messages from Kyle.
"I couldn't believe how cheeky he was to swear at someone he didn't even know. "Well he wasn't swearing at Danny, he was swearing at United. It was the truth.
"He's a hilarious cheeky lad. Luckily because I knew Danny I didn't mind. I told him you can't be going round saying that but he just told me it was true.
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"I couldn't disagree with him and I couldn't shout at him, could I?
"His mum's a United fan so that's where the banter comes from. He used to get s**t off his grandparents and now he gives it back to them."
Danny said: "It was brilliant and since it's happened I've woken up every morning with a smile on my face thinking about it.
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"He was trying to get his words out and didn't quite know what to say but I wasn't expecting that to come out of his mouth. I love that he said 'tell your dad'.
"Kyle's daughter's face dropped and it was hilarious. I was in tears of laughter.
"That's what football's about. Being a United fan we take it all tongue-in-cheek at the moment.
"I'm glad Kyle sent it to me and it's refreshing to see a nice video going viral."
Featured Image Credit: Kennedy News and MediaTopics: Football, Manchester City, Manchester United, Sport, Viral