If my waiter does tell me to fuck off, I won't ask for the manager -- if I'm right, then that would get the waiter fired, and I'm not up for that.

You're not getting off that easily, Cyan. I agree with smoofra, and I'd be willing to front the "unemployment compensation package" on this one -- if the waitress gets fired, I'll pay two weeks of her typical (after tax) income to her.

I think you're forgetting that "announcing intent not to tip" is not very common and your extrapolation from similar scenarios seems hasty.

I also think you were oversimplifying the issue here:

The only reason the waiter is bringing you food is because of the expectation that you will tip.

Wacky. The waiter brings food because that's the job description.

The job requires them to bring out food, but they joined on with the expectation of being tipped. To the extent that they don't expect a tip, they may still bring out the food, but not with the same effort and enthusiasm.