A douchebag you see hagning out with a hot girl.
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.)