After desperately looking around for some parental help, the girl eventually gives up and takes matters into her own hands. She bends down, grabs one of the boy's feet and quickly drags him out of shot, clearly keen to get off camera.
The video has since gone viral on social media, with Delahunt himself responding to the blooper.
It isn't the first meltdown by caught on camera this week. Another eagle-eyed social media user captured footage of someone else struggling with an unpredictable youngster - except this cheeky tantrum came from a dog.
The naughty golden retriever caused all sorts of embarrassment for its owner as he walked the dog on a busy Gold Coast beach. The video shows the dog refusing to follow his owner on their beach walk and, not wanting to move, flopping on to the ground.
For almost a minute, the owner tries to tug the canine along on the lead while it refuses to budge.
Eventually, the man gives up trying to make the dog walk, takes off its lead and walks away - and the dog finally follows.
The dog who REALLY wasn't ready to leave just yet
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Posted by Kristen Kate on Sunday, 6 August 2017
The Scottish boy's tantrum has also sparked memories of another toddler's hilarious behaviour during a live TV segment.
Robert Kelly, a South Korean expert and professor, saw his BBC interview go viral back in March after his children burst in and interrupted his chat with the network.