Top definition
A nickname given to a friend who mumbles constantly or does things that leaves one wondering if he is completely normal.

Comes from the word Gibbrish.
Jovanny:Hey yo eric have you noticed Luis mumbles alot when he talks on the phone
Eric:Yah! its so weird
Jovanny:From now on lets call him "Gibers"
by RecklessJ June 24, 2011
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