a dutchman's blow - Shoving your hand in your nose and blowing snot out like it’

Shoving your hand in your nose and blowing snot out like it’s a crime scene and you’re the detective.

I did a Dutchman’s blow in the bathroom. The toilet paper got a face full of snot.

He did a Dutchman’s blow in the kitchen. My mom screamed like it was a horror movie.

She did a Dutchman’s blow in the middle of a Zoom call. Her coworkers were confused.