[maratd]

> Pizza delivery? What? Cab drivers? Seriously? The omelet chef in a hotel's breakfast restaurant? Are you kidding me?!?

I'm a native, but don't think it's so obvious for us either. One time I got a stern talking to by my barber. I now tip every time I get a haircut.

I used to work installing audio and video equipment as a kid and got tipped all the time.

If somebody renders any kind of service, tips are frequently expected.