As someone who (partially) financed his early college years by both waiting tables and delivering pizzas, I know a thing or three about this.
Of course, giving specifics will draw hordes of people who "fit the mold" in here to claim that they are ALL the exception to the generally accepted "rules" of the food service industry... and that the experiences of me and my coworkers at several different restaurants and sub shops are all skewed by our shitty personalities.
I'll probably toss it out there tomorrow, just for the fuck of it, to see what happens.
<--- divides his bill by three, rounds up to the nearest five, and tips that. Even if they don't swing by my table every three minutes to fawn over me, pretend to find me attractive and compliment me on my food choices while laughing at my restaurant puns. Come at me, bros.