Not just an unintended result but the total opposite WITH a negative consequence.
See also Complete Oppo-shit
You provide the honest answer "Yes, you are an asshole."
You get fired on the spot. That's the TOTAL OPPO-SHIT of what you expected.
When you get home and share this unfortunate turn of events with your girlfriend, she stares at you blankly.
You tell her not to worry, you will bounce back.
"With you by my side how can I lose?", she then tells you
to get your shit and get out...NOW!
That was the COMPLETE OPPO-SHIT of what you wanted!