"I was like ... bro ... you got away! The second fella looked at me and I thought you're not going anywhere, fella," he recalled.
Hemopo then sat on top of the thief, who struggled at first but quickly gave up and told him he was only 15 years old.
He said his fatherly instinct kicked in, as he has a teenage son himself, and decided it was as good a time as any for some words of wisdom.
"I just started giving him life advice, I guess. I was like ... mate, I have a 15-year-old son ... why are you hanging out with these drop kicks? They are not good for you. Like you got your whole life ahead of you, bud."
The kid offered him $200 bribe to let him go, but Hemopo declined, pointing to his truck and telling him he already had a job.
Stefanovic made reference to the film Kiwi cult classic Once Were Warriors, asking Hemopo if he told the boy "too many weights, not enough speed".
The hilarious interview ended with Hemopo inviting Stefanovic over for a barbeque.