'tard
Someone who is NOT retarded, but, acts like they are because they are too busy fantasizing about stupid bullshit to pay attention to the reality that surrounds them.
Example:
Poindexter is such a 'tard! He got into a car accident because he was too busy thinking about his fan fic sequel to "The Lord Of The Rings".
Poindexter is such a 'tard! He got into a car accident because he was too busy thinking about his fan fic sequel to "The Lord Of The Rings".