what gz said...urban dictionary says: A 'silly' person. It is used as a more harsh form of 'idiot' but not quite as offensive as implying they have some form of mental retardation. It is a mild level insult basically. or: 1. A less harsh word for fuckwit, dick, idiot, and all other offensive terms refering to someone who is being silly. It is also a less serious term, therefore sounding less offensive, and because of the ridiculous sound of the word, it can be taken more lightly. you take your pick
i'm sure "the end" is going to be thrilled by this information...he gets called silly in just about every thread