A combination of "shit" and "terrific" used as an adjective to describe something something particularly bad, in a mildly sarcastic tone. Usually in response to a question of quality.
emotion or lack there of, sarcastic remark, used to describe any person place event or thing that one is not too thrilled with
how was your day? it was shitterriffic
the girls are coming over to have a sob fest. that's just shitterriffic!reshitulous shit-er-riffic craptacular shiteriffic ass mode