What's the funniest or weirdest bunch of guesses by spectators in regards to the method of a magic effect you perform? Something so insanely stupid that it couldn't even really work at all? Here are the best of the bunch for me:
I performed a Zombie routine onstage, and afterwards a young kid said "Your cloth is magnetic!"... I guess it's The Mystery Of The Floating Cloth then... OOO.

I performed Interlace, and the spectator's theory was that I shoved the ring down my pants when she wasn't looking. I guess I get to keep it then?
I did Dan Harlan's Hovercard, and the spectator told me that the card had repelling magnets in it. At least he didn't spot the gimmick.

Let's hear 'em! This could be quite interesting.