A giant retard. An increasingly common word in The Yukon and Calgary (Canada), as well as in Malta.
"You are such a fucking gi-tard."
A person who repeatedly loses ju jitsu/ judo fights by doing stupid things. (often used as a general term of abuse).
person A: i cant believe i gave him a straight arm again!
person B: i know your such a Gi-Tard. *Armbars person A*