Brisbane radio host Matty Acton shocks by revealing he's a grandpa at just 37: 'The math ain't mathing'

Brisbane's B105 radio star Matty Acton revealed on Wednesday that he became a grandpa for the first time at just 37 years old. Taking to Instagram, the radio host shared sweet photos of his granddaughter, causing a lot of confusion among his followers.

"Welcome to the family Illyria Fay Acton 👶🏻 We love and adore you," he wrote on Instagram, along with several snaps of him and his family with the baby.

It didn't take long for his followers to question what they were reading, with one user writing, "Congratulations to all! But how the hell are you a Grandpa? I thought you were 30-something!"

"Hang on… Grandpa? The math ain’t mathing," another said.

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"Kidding me? You are grandpa? 😮," a third wrote.

"Everyone madly googling Marty’s age lol 😂," someone else said. "Congratulations absolutely gorgeous!"

Matty's stepson Ethan Acton, 23, and his wife Madison welcomed their baby girl into the world on Monday, with the radio host sharing the news on Tuesday.

He shared that meeting his granddaughter for the first time was magical and had him thinking back to when his youngest daughter Eden was born, saying, "It was one of the most amazing experiences of my life."

"The last time we were here we were leaving with Eden. If everyone can now call me granddaddy it would be greatly appreciated."

Matty has been a father to his wife Esther Acton's son Ethan since he was three years old, the couple also share Xander, 10, and Eden, seven.

One Instagram user pointed this out in the comments, writing, "He started dating his wife when he was somewhere around 18/19 [years old] and she was a little older and had her son from a previous relationship.

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"Matty took on the role of dad. He’s currently 37, and his wife is 40/41ish. A grandparent isn’t impossible at that age. 🤷🏻‍♀️ He does have numerous videos/clips of the radio show that detail how he and his wife met, and how he became dad to his eldest etc."

"Your wife is seriously the hottest grandma in Brisbane. Congrats to you all," another said.

"Dude! You’re married to a GILF!!" someone else joked.