By Daily Mail Australia Reporter
Published: 09:54 GMT, 16 February 2019 | Updated: 09:59 GMT, 16 February 2019
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He's expecting his first child with Laura Byrne.
And on Saturday's Nova 96.9 Matt, Sarah & Matty J radio show, Matty 'J' Johnson admitted to still having a lot to learn about what a baby needs.
Quizzed on the program by his pregnant girlfriend, the 31-year-old said he is unsure of the most important large item required, shortly after the birth.
'I have absolutely no idea': Matty 'J' Johnson, 31, admitted to having a lot to learn as pregnant girlfriend Laura Byrne, 32, quizzed him on what a baby needs
Laura, 32, appeared on Saturday's program, where she called in to test Matty's baby knowledge.
The jewellery designer, who is 24 weeks pregnant, asked Matty questions based off parenting book, The First Six Weeks.
Laura began by asking Matty the three large items parents need urgently, after the birth.
Joking, the marketing manager answered: 'A new
