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A "dickhead"
A Gilad is an intolerable Dickhead, He is the kind of person whom you cannot bear to be around, and is always acting the fool
A Gilad Grant is the upmost form of a Gilad
You are a fucking gilad

Guy 1: Is your mate coming with us today?
Guy 2: Yeah, is that ok?
Guy 1: He is a bit of a Gilad though
Guy 2: I know, but he's a family friend
Guy 1 : Fine, but don't blame me if I lose my patience with that stupid Gilad

He was acting like such a Gilad all night, I wanted to punch him

That guy is such a Gilad Grant, I can't wait till everyone finally realises that he is!
by EdaleBantz December 10, 2013