>To taunt, ridicule, or tease, especially for embarrassing mistakes or faults. See synonyms at ridicule.
>n.
>1. The act or an instance of twitting.
>2. A reproach, gibe, or taunt.
>3. Slang. A Silly, foolishly annoying person
>
>The definition I've know all my life is 'a silly and annoying person.' It's not very common nowadays though. It was never used in a derogatory manner though - it was used more in jest - a silly word, not a mean one. I think it loses the humour (it's really a silly term) in translation to other cultures and languages.

I think you're right. Ever see Monty Pythons 'Upper-class Twit of the year' skit?