The first type can be considered positive where the ' sure thing' option highlights the positivity whereas if it is negative, the 'sure thing' option highlights the negativity, while both being analytically identical.The existence of a cable-only WB affiliate, 'WFWB,' which was carried by area cable systems as part of The WB 100+ national cable service, made a CW affiliation for WWMB seem less of a sure thing.One of many sports idioms, the phrase 'slam dunk' is often used outside of basketball to refer colloquially to something that has a certain outcome or guaranteed success (a ' sure thing').