This 5-Year-Old's Reaction to Becoming a Big Brother Is Too Cute [WATCH]

Screengrab via YouTube

If you're a parent, telling your only child that they'll be getting a sibling can be a nerve-wracking process.

Even the quietest and sweetest child may lash out after realizing that he or she will be sharing everything with another tiny human. Thankfully for this lucky mom, the only thing she had to face was the excitement and utter disbelief of her adorable son.

SEE ALSO: This Baby and Puppy Were Born on the Same Day. Now They Have the Cutest Friendship Ever.

The mother took video of her son in the backseat as she showed him her ultrasound photos. As she gently explained to him that they would soon be adding another member to their family, his eyes begin to widen. He goes on to ask his mother a barrage of questions as he tries to process the news.

You can tell he's incredibly excited about the idea but can't quite believe his brother is growing inside his mother's belly. Although he's overwhelmed, it's clear that he can't wait to take on his new role as big brother. It's a heartwarming moment between mother and son that will definitely bring a smile to your face.

Click below to see this little kid's super cute reaction to his mother's big surprise.

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This 5-Year-Old's Reaction to Becoming a Big Brother Is Too Cute [WATCH]