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.(noun)
To perform a noogie on.(verb)
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Use "noogie" in a sentence
"It's funny, the full name of Mesa Amplifiers contains a second name that rhymes with 'noogie' but my comment was initially denied for questionable content."
"Everyone has seen the sitcoms where the older brother gives the younger brother a friendly punch in the arm once in a while, or a "noogie" here and there."
"They still hug me, even, though most of those end with a "noogie" or a wrestling move."