The act of screaming the word retard at the top of your retarded lungs, while trying to be retardedly obnoxious. The most retarded retard wins the retard off...retards.
James: REEEEEEEEEtard! (drools)
James: Aww shucks you win the retard off...Austin, you're so much better than me...you have all the elements of a good retard-offer.