I'm 12 and what is this? - A phrase that comes out of nowhere when a kid sees something

A phrase that comes out of nowhere when a kid sees something gross or weird. It’s like they’re screaming at the screen and crying at the same time.

I’m 12 and what is this? This guy just threw a banana at a dog.

I’m 12 and what is this? Why is this video so long?

I’m 12 and what is this? Why is that man wearing a chicken suit and crying?