A phrase, used occasionally when
greeting, someone within a close
proximity to your own age (1 day-1 year).
Used more frequently by a non-relative when greeting a (
friend's possibly) child.
Katie: (to Jeff) "Hey
Kiddo"
Jeff: "Oh shut the hell up I'm only
3 weeks younger than you"
Katie: "Still fucking younger
kiddo"
or
Old guy: "Hey Kiddo" (some form of annoying touching i.e. cheek
pinch)
Teenager: "WTF?!?!"