I do this thing where I play the right flipper and they play the left flipper.
A. Makes it impossible for them to flip both at once.
B. Everyone knows whose fault it was when there's a drain. Quite obvious whose flipper was up causing the ball to bounce off the underside and drain. Teaches the principle of fast flips without you saying anything.
C. Causes them to witness advanced stuff that you do, like drop catches and whatever outlane nudging you can do from your side.
D. You can show them tricks like your post pass and make them feel like they're involved in it. Also you can show them principles of ball control by ALWAYS dead bouncing the ball to them. They'll be happy to get the ball more to take easy shots. And they'll also gradually realize that you can relax and let the ball lose momentum the same way.
E. With more invested in watching you play, they will also see how you are punished with bricks after carefully gaining control of the ball. They will see how often a post pass gets things out of control. I think some people resist playing a controlled game because they're punished so frequently and it makes them feel foolish. If they see that this is just part of the game, for anyone, they will be more likely to take it in stride.
I will say that this is a weird thing to do with another man that is not a close friend or relative or something. I would never try this with a stranger in a bar unless it was a lady. And the couple of times I did do it with a stranger lady, it was a great ice breaker.