among my close circle of friends, there will be detailed negotiations over the menu and the possibility of swapskis....if you get the veal, I'll get the lamb, and we'll switch..oftentimes these trades involve three or more people, so that the whole restaurant menu gets sampled. We also do this in my family, except for my father, who never shares; if you want something on his plate, you have to get there early and help yourself. I would not share, nor expected to share with, people I didn't know very well.