You and your boy are walking down the sidewalk and pass a complete douche (usually a jock or emo kid or a metro douche) whose going out with a hot girl and you'd rather be with her instead of the douchebag. So in order to tell your boy that you utter, or many times yell, SwerveBANK!
*OMG dude did oyu see that girl at the party last night?
-yeah dude but she was with a total swervebank.
*fuck it dude lets go curbstomp that swervebank and find that girl.
-YERF!!!! (*see YERF for further comprehension.)
A word used to express exetreme excitedment, or eagerness.
Can also be used to express understanding of a subject, theory or plan.
The word is usually yelled obnoxiously in a manner such as lil jon would say yeah!
Derived from the name of the some-what popular go-kart brand Yerf-dog.
Also may be used anytime you make a powerful/sharp turn in a car.
Another use for the word is to yell it when looking for a friend in a crowd or in the woods, in this case yerf can be exchanged with the rapper "birdman's" signature call BRRRRRRRRRRR (as to imitate a pigeon or other bird-like creature's call)
Guy 1: Dude lets go smoke then get some slushies at Wawa
Guy 2: YEEERRRRRRRRRFFFFFFFFF!!!!
Guy 1 pulls into guy 2's driveway quickly and smoothly and lets out a mighty "yerf" to signify his entrance.