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Zellin- to constantly one-up the person or people you are talking to. using lies or exaggerations.
you:dude today i saw this police office chasing this guy down the road!

your friend: oh man thats nothing yesterday i saw a cop chase down johny depp for speeding and after he caught up to him johny depp kicked his ass. he then saw me and told me to never tell anyone or id be next. he ran after that and got away with it
(your friend just did some hardcore zellin)
by BERBERBERber420 January 15, 2010
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