One who goes off hastily and is full of dung.
That Dennis is one big Scathead.
by Becca/FL April 25, 2007
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When a friend goes behind your back and goes with your ex. It's such a scatheaded thing to do. It's an un-written rule between friends, to never go near eachothers ex's.
Oh they are such scatheads, she went behind my back and got with my ex, what a bitch!
by welikecircles September 14, 2009
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