Hope I am posting in the correct place...

Looking for some help/suggestions.
I need an entertaining ( interpret - 'funny')
question to ask 4-5 spectators...

I have a really good routine I'd like to try very soon at a gig
That revolves around multiple spectators, 4-5 or so
All of whom lie , except one...
And I can , with a few questions, or maybe even with one question
figure out who is whom...
The questions asked actually have nothing to do with the method
as well ahead of time , I have already understood who are the liars and who is the one truth teller.
The overall effect is similar to Ken Dyne's Mr golden balls...
But different in many ways
Plus I am working a crowd that would not at all appreciate crude questions.
Mr Dyne is amazing and he can pull off "Off Color" type questions to ask each paticipant
But I myself am trying to come up with some questions I can ask ,
which will make the spec think , and answer something interesting or funny...
(not just a Yes or No answer...)
Any suggestions would be very much appreciated...
Thanx !

Try questions you might use in a survey, those that require people to make selections. What you could do is to create a sense that these questions might be important and then begin asking questions that are comical to a degree for entertainment value.