or not
Example:
Person 1: "Justin Timberlake is so cool. I mean he's got all the girls after him and he dances like wild fire. You've gotta say he's uber fit looking too..."
Person 2: "...or not"
Person 1: "Justin Timberlake is so cool. I mean he's got all the girls after him and he dances like wild fire. You've gotta say he's uber fit looking too..."
Person 2: "...or not"