Further, if it's a kid wanting to play the pin I'm on, and I've been crushing the game (probably ringing up at least one free credit), after my game, I turn around and ask the kid if he wants to play a game for free on my credit(s). Depending on the venue, a few times I've asked the kid's parent standing nearby if they mind me teaching their kid a few things about pinball (so that way no one freaks out about a stranger talking to their kid for an extended time), and then I show the kid the basics of flipping one flipper at a time, and the 1-2 shots to hit to start multiball or some other major feature. Hopefully I've spread the pinball bug to a couple kids over the years, so they can get away from the usual kiddie-gambling redemption games and enjoy our great hobby!