Muggy
Used to describe a situation where someone has been made to look a fool or been "mugged off". A person can also be described as muggy if they are responsible for making someone look a mug.
Example:
Chris : he's just walked in and stolen my bird. That's well muggy.
Mike: Did he just call me muggy?!
Chris : he's just walked in and stolen my bird. That's well muggy.
Mike: Did he just call me muggy?!