Chris O'Dowd's son is turning out to be something of a comedian like his dad.

He's just turned one this month, but little Art is already saying his first words, though they're not what you might expect.

Designer and TV personality Dawn O'Porter took to Twitter today to share an update about baby Art, who she and Chris welcomed last year.

This is no joke, my baby is saying potato before he has said mummy. I don't know what this says about us as a family.

— Dawn O'Porter (@hotpatooties) January 20, 2016

"This is no joke, my baby is saying potato before he has said mummy," Dawn wrote. 

"I don't know what this says about us as a family."

We know what it says – baby Art is getting to grips with his half-Irish roots, that's what.

The star couple have kept their little one out of the public eye since he was born in January 2015, though they have shared the odd adorable update, like this one of mummy and son in matching woolly leggings.

"Until he can tell me himself that matching outfits are not cool, it's happening," Dawn said of the cute fashion faux-pas.

And first-time parenthood hasn't gone too badly for Dawn and Chris, it would seem.

"Art's given me a really lovely start," Dawn told Glamour magazine recently.

"It's hard work and bloody relentless, but he's a really nice baby. I feel very lucky to have a healthy child.

"I was very emotionally ready to be a mum, so by the time he flopped out – well, didn't quite flop out – I was raring to go. He's very cute."