His reaction is probably not what these parents were expecting when they revealed to their son and two daughters the gender of their next baby.
In video posted online earlier this month, 6-year-old Gunner Mertlich has an utter meltdown upon learning that he will have to welcome into the Arizona family's household another sister.
"I don't want another girl," he shouts as tears stream down his face.
"I hate girls! Every time it's girl, girl, girl, girl! It's always gonna be girls," he adds.
Footage of Mertlich's reaction has now gone viral, achieving over half-a-million views on YouTube at the time of publication.
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