Someone who shares the characteristics of a lunatic and a larrikin. A mischievous person whose actions and manner are marked by extreme eccentricity or recklessness.
*To the other person to write a definition* Yes it is a good song and the game is the shit but this isn't the place for those kinds of "definitions"... ;D
The process of increasing the mental instability of your mind by smoking a formidable amount of dank weed and chugging Four Loko. You will likely start asking questions regarding the telepathic nature of radishes.
Person A: Why is Steve standing on the futon and lecuting the freshman about the dangers of nargles?
Person B: Dude, he pulled a Luna Lovegood, we are no longer on the same plane of reality as this man.