NICE GUY EDDIE: Okay, everybody cough up green for the little lady.
NICE GUY EDDIE: C'mon, throw in a buck.

MR. PINK: Uh-uh. I don't tip.

NICE GUY EDDIE: Whaddaya mean you don't tip?

MR. PINK: I don't believe in it.

NICE GUY EDDIE: You don't believe in tipping?

MR. WHITE: I love this kid, he's a madman, this guy.

MR. BLONDE: Do you have any idea what these ladies make? They make shit.

MR. PINK: Don't give me that. She don't make enough money, she can quit.

NICE GUY EDDIE: I don't even know a Jew who'd have the balls to say that. So let's get this straight. You never ever tip?

MR. PINK: I don't tip because society says I gotta. I tip when somebody deserves a tip. When somebody really puts forth an effort, they deserve a little something extra. But this tipping automatically, that shit's for the birds. As far as I'm concerned, they're just doin their job.

MR. BLUE: Our girl was nice.

MR. PINK: Our girl was okay. She didn't do anything special.

MR. BLONDE: What's something special, take ya in the kitchen and suck your dick?

NICE GUY EDDIE: I'd go over twelve percent for that.

MR. PINK: Look, I ordered coffee. Now we've been here a long fuckin time, and she's only filled my cup three times. When I order coffee, I want it filled six times.

MR. BLONDE: What if she's too busy?

MR. PINK: The words "too busy" shouldn't be in a waitress's vocabulary.

NICE GUY EDDIE: Excuse me, Mr. White, but the last thing you need is another cup of coffee.

MR. PINK: These ladies aren't starvin to death. They make minimum wage. When I worked for minimum wage, I wasn't lucky enough to have a job that society deemed tipworthy.

NICE GUY EDDIE: Ahh, now we're getting down to it. It's not just that he's a cheap bastard--

MR. ORANGE: --It is that too--

NICE GUY EDDIE: --It is that too. But it's also he couldn't get a waiter job. You talk like a pissed off dishwasher: "Fuck those cunts and their fucking tips."

MR. BLONDE: So you don't care that they're counting on your tip to live?

MR. PINK: Do you know what this is? It's the world's smallest violin, playing just for the waitresses.

In the sense of gratuity, originally a small amount of beverage (i.e. tipple) left in a glass for the bartender

http://en.wiktionary.org/wiki/Tip