the travel of one's shpit off a balcony in a shpiral pattern that continues in a double-helix-shaped pathway towards the ground.
"Guy1: Hey man! Did you see that?"
"Guy2: Yeah dude, did your spit travel in a spiral pattern?"
Guy1: Wow..a shpittle shpiral"
"Shpittle Shpiral Competition (proper noun)- a weekly competition, typically sponsored at one's apartment between roommates, to cause one's spit to travel in aesthetic patterns off one's balcony.