Someone who just doesn't learn from sore experience, whose knotty head speaks to repeated thumpings for trying to do something they were told not to do.
My sack-o-shit father called us all knotheads when we tried to raid the cookie jar.
KittyHead is the name of the weird, 16 year old boy that has Myspace & is ever so slightly Immature Odd but also he's kawaii (cute) :P
He likes straightening his hair & dying it black, and he also has an obsession for eating Chicken Nuggets & Curly fries every night for dinner.
His nicknames include;
KittyFace
KittyBasket
KittyBasketOfKittens
KittyBasketOfKittensWearingMittens
CanCanTheKittyCanCan
Kitty Kittyness, and so on and so forth.
His real name is Josh, the shortened version of the name Joshua. Yeah.
Adj: Generic term for cheap wine. This is derived from the huge bottles (generally gallon sized) that K-Mart used to sell for $2-3 USD. These bottles had simulated grapes blown into the glass, after consuming this poison the person would have a huge hangover hence the term "Knotty head"