Jon Courtenay, 46, from Manchester appeared on the show to perform a song he wrote as his sons and wife sat in the audience.
Jon revealed his dream was to perform on TV as he sat at a piano and performed.
In his song, Jon joked about his sons and his dream of becoming a performer.
He left the judges emotional and laughing during the performance.
His sons became teary as they watched him from the audience.
After that, judge Simon Cowell told him: "Jon, it was just a wonderful audition.
"You are somebody who worked for years, needs a break and we all want you to do well.
"So, I would love to be the first to say yes..."
Ant and Dec pressed the Golden Buzzer on Britain's Got Talent
However, hosts Ant and Dec then ran on stage and pushed the Golden Buzzer - meaning Jon heads straight into the semi-finals.
Meanwhile, Jon was overwhelmed as his sons ran on stage and hugged him.
What did viewers say?
Many viewers were thrilled by Ant and Dec's choice.
One person said on Twitter: "Congratulations on your golden buzzer @antanddec, Jon was absolutely brilliant."
Similarly, another wrote: "Fantastic choice for the golden buzzer had me in floods."
A third added: "@antanddec brilliant golden buzzer act there lads! Well well deserved!"
However, others weren't happy and shared their thoughts.
What did they say?
For instance, one tweeted: "Wtf?! How was that a golden buzzer?!?!"
After that, another wrote: "John has surprised me I’m not normally into this sort of thing but it was very sweet.
"I don’t know if it was a golden buzzer act."
In conclusion, one said: "It's getting worse. Golden buzzer for that??
"Thousands of pub performers around the country who are if not better or just as good."
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