Parents often find it hard to resist their children's pleas for treats, but one savvy mum has cracked the code and her clever hack is taking the internet by storm.

On TikTok, Caitlin and Leah, a duo known for dishing out parenting advice to their whopping 9.7 million followers, revealed a nifty trick to indulge their son's McDonald's cravings without breaking the bank. Their recent video, which garnered a whopping 224,000 likes, shows Caitlin confessing they used to spend a small fortune on fast food for their lad until she devised a smart ruse.

The voiceover in the clip declares: "Our son is absolutely obsessed with McDonald's and it's costing us a fortune.

"So I've decided to make my own and disguise it. I really hope he doesn't notice."

Caitlin is then seen tiptoeing into the kitchen to retrieve a discarded McDonald's bag from the bin. She proceeds to whip up some homemade fries in the airfryer and crafts a burger to match the fast-food giant's offerings.

After cooking, she assembles the meal using the McDonald's packaging, meticulously placing everything back into the bag to present to her unsuspecting son.

The video culminates with Caitlin's little boy bubbling with joy at the sight of his 'McDonald's' feast. He exclaims: "It's McDonald's. Want it want it. Want my burger burger. I love it! I love McDonald's. I love you darling."

The video went viral with the caption: "I think we've found a new parenting hack. Let's hope he doesn't start to notice."

Since hitting TikTok, it has drawn heaps of admiration for the clever trick.

One user quipped: "Unfortunately he's going to notice... the food is actually warm for once." Another chimed in: "He's so cute at the end."

While some suggested Caitlin could simply tell her son "no". A commenter advised: "Just refuse the McDonald's, it's not that hard."

Caitlin and Leah, an LGBTQ+ duo, frequently offer insights into their married life and parenthood experiences.

They run a YouTube channel filled with vlogs and guidance. Also the couple gained attention on Instagram and TikTok after documenting their IVF journey.