Crashdance22: Some of the older Bally games did that. Spectrum comes to mind. *ball kick out the shooter column* "You're taking too long!" This is also the game that tells you to "Get a clue!" though that actually pertains to the game and not the player.
Yeah, I thought this thread was about like at gameroom shows where people would just walk off in the middle of a game. Bugs the hell out of me. The Eddie Murphys are annoying too (people who play 4-player games by themselves). Kids who think repeatedly pressing the Start button gives them lots of points, even when you try to explain how the games work. Flipper slammers (I don't mean the players who do slap shots or combo nudge/flips, I mean the people who slam both flipper buttons repeatedly throughout the whole game even when the ball isn't anywhere near them).
On the other hand, I too have had to leave credits on games (most often because I was running out of lunch time), but that works both ways. Sometimes I find a credit on a game and play that. Often I leave the resulting replay (if I get one) for the next player.