Finorf, Finorfing, Finorfed, To Finorf
The act of Finorfing someone is to place your mouth over a victim's nose and blow air into it, causing the airflow to go down their nasal cavity, down their throat, and -- if you're good -- back out the victim's own mouth.
It is preferably done on sleeping victims so as to serve them the rudest wake up call they've ever received in their lives, but it can be done to victims that are awake as well.
Guy #1: (Finorfed his sleeping friend)
Guy #2: Dude, WTF, you totally just Finorfed me!
Guy #1: That's what you get for puking on my couch last night, asshole!