This kid isn’t just a little bit excited by the thought of being a big brother; he’s really, really excited.

With his gleeful facial expressions and sudden outbursts of explosive joy punctuated by the occasional serious question, British mother Sarah Bromby’s 5-year-old son is on a whole new level of cuteness.

We’re pretty sure he’s going to be the best big brother ever.

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5-year-old’s enthusiastic reaction to becoming a big brother is hilariously cute