"The word doodle first appeared in the early seventeenth century to mean a fool or simpleton, and is thought to derive from the Low German dudeltopf, meaning "fool" or "simpleton". This is the origin of the early eighteenth century verb to doodle, meaning "to swindle or to make a fool of". The modern meaning emerged in the 1930s either from this meaning or from the verb "to dawdle", which since the seventeenth century has had the meaning of wasting time or being lazy."
Well, this makes sense - just being lazy.....
