usually if I go out to eat with a group of close friends, the bill comes out and we split it evenly. doesn't matter if you ate the $15 entree and I ate a $8 dollar salad, unless of course someone came just to hang out and ordered a drink, that person is told to put their wallet away. and the guys pay for their significant other. if I go out to eat with a group of acquaintances, I think it's common to do either separate checks or we're splitting everything evenly. but of course if someone orders an abnormal amount of food, people should own up to it and pay a little more. my brother and his college friends used to do credit card roulette. everyone throws in their cards, the waiter picks one out. depending on the rules of the night, if your card get picked then you're exempt from paying OR you're paying for the full tab.
