A phrase used when one's finger has recently emerged from their asshole, and
the speaker wishes the listener to
experience the smell of the speaker's own ass, i.e. that of poo. Used once by Chris Griffin from
Family Guy, and parodied by the title of an online game, "Spell My Finger".
Person 1: Hey, man, smell my finger.
Person 2: I know where you're
going with this. I don't appreciate that you'd try to
fuck me over in this way.
Person 1: Dude, it's
not like that. I was just touching some Smencils I have in my pocket.
Person 2: Oh, I've always wanted to know what those smell like. I swear to Christ, it'll be the death of me when I figure out how to attach a smell to a pencil. All right, then... Aaaaagghh! Asshole!