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1.
A man with a really huge forehead. Usually ranging in dstance between the nose and hairline from 4.5 to 5.5 inches or so.

One may find it apporpiate to call his buddy 'your five inch foreheadedness'
look at the head on this dude.

Oh i know him. thats five inch forehead man.
by parrowman1 August 01, 2010