similar to the word square, meaning someone who is out of touch with current trends and culture, basically someone who "lives in a box" and appears to have no human relations skills. Also someone who is very uptight about trivial things.
Johnny was so box, he was panicing because he was unable to locate the assignment that he completed three weeks before it was due.
Verb: To pester or hinder another with a box or box shaped object. Usually requires asking "Box?" without any actual consent to warn the person of their impending doom.