Mexican handkerchief 

The act of forcefully excreting mucosal sinus contents through one nostril and onto the ground (or floor) via the closing of the other whilst expelling air - likely originating in either the American southwest or Bible Belt, most prevalently used in the trucking and agricultural industries snot rocket farmer blow

I gave up lookin' fer a Kleenex and pulled out a Mexican handkerchief on the lobby floor.

Mexican handkerchief by Wyndham Lewis April 30, 2012