a dutchman's blow
Blowing snot out of one nose like you’re trying to clear a blockage, and your hand is the enemy you’re fighting.
He did a Dutchman’s blow in the car. I had to clean the window with my shirt.
My brother did a Dutchman’s blow at the dinner table. The soup got a face full of snot.
She did a Dutchman’s blow in the bathroom. The toilet paper was covered in snot.