1: the state of having excessive slog in your head
2: being inept, foolish, moronic, or existing in any other state of little to no intellegence
3: general insult
A: Well your mom's a slut!
B: Well you're a sloghead!
A: oh damn, I got boned
B: yes you did, yes you did.
by Rob April 5, 2005
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