Sometimes people will come up with their phone in hand, with a song or kareoke track cued up wanting you to stop your show so they can have their moment. How do you deal with that?
My own generic solution is "always compliment them before you push them off the deck."
phone in hand wonder boy: Can you play this song for me so I can sing it to my girl friend? I have it ready to go on my I-phone?"
me: Wow....I know that song.......it's a really great tune. I can see why you want to do it. It will knock the sox off your girl friend. She'll probably drop down on one knee and ask you to marry her before you even finish it. But....look around. The audience is filled with a bunch of stuffed shirts. THEY would never understand that kind of really great music. I'll try and sneak it in for you LATER (after you are so drunk you'll forget about trying to be an America's Got Talent finalist).
I'm not kidding. I go through that whole routine. The trick being.....you have to believe what you're saying yourself or it doesn't work.
Then again....they're so rude and demanding nowadays, they either throw a temper tantrum on the spot, or go crying to the "host" who usually totally destroys the party by allowing it.
I'm almost glad I was a performing musician...in my other life...before the great transformation. No money coming in, but no dramas either.