A happy or elated person. A person who sings and dances alot. Love entertaining people and making others happy. Sometimes this person can be overbearing, as well as, aggressive.
The actual meaning is a dress from a greek origin however in slang terms it is an offence.
Grecian - to look like a llama or alpaca species
Tard- idiot
Girl 1: hey that guy looks like a llama dont you think?
Girl 2: yeah he kinda does, i have heard he is such an idiot
Girl 1: well then i guess he is a grecian tard