Reading an article on Snopes, I'm reminded of a time when I was chosen from the audience to be part of a magic trick.
I was not in on the act. I was just as dumbfounded as the remainder of the audience. And then it came: The act was performed aboard a cruise ship. Which meant everyone who had seen me at some point had a chance to corner and question me about the trick.
My response: "No. I don't know how he did it, but it certainly was cool."
There are probably people to this day who thought I was part of the trick. Not every magic trick has a preselected participant in the audience.