from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An act of putting a person in a headlock and rubbing one's knuckles on the other person's head, often a playful gesture of affection when done lightly.
- v. To perform a noogie on.
Unknown, possibly from Yiddish נודזשען (nudzhen, "to badger"), or possibly via an alteration of nudge, matching the alteration of wedge to wedgie. (Wiktionary)