Comidicly-Retarded
To be comidicly-retarded is to be completely unaware of the joke at hand. As the great General Sam once said "some of you are comidicly-retarded. Pronunciation is rather simple: com-ee-dic-ly re-tar-ded.
This fucking asshole here. Doesn't even get the joke and he sits there bobbin' his stupid head along. He's comidicly-retarded.