I think you guys have the wrong idea of what happened. So, I don't ever challenge my spectators. My show is primarily comedy, and what happened was this girl and her boyfriend walked up to my table and asked if they could see some magic. I said certainly, and launched immediately into my red and blue routine for them, which is one of my better written routines. They immediately started trying to break me down, with the boyfriend calling me out, saying he saw the selected card, which he most definitely did not, and the girlfriend lying about the end result. At no point did I challenge them, or try to make them feel inferior. They just walked over and immediately started laying into me. They walked away laughing, and the rest of the crowd felt very awkward. How do you recognize these people quickly, because I had about a few seconds to see. Could I have done anything to prevent or alter that situation, or is it just something that I will have to deal with as a performer?