An insulting word for someone that is stupidly funny or foolish.
A different dialect of the word twat. Also can be used as a shortened version of nitwit. Twit is a much less harsh version of twat, comparable to thot is to hoe, but similar to thot one could take offense to.
Used as a blunt way to describe a foolish person.
I saw some absolute twit just try to put a crayon in an electric pencil sharpener.
Oi mate, lookat this twit jaywalkin' o'er there!
Them: You are such a twit!
You: Excuse me!? I am not a pregnant gold fish