282. Staring at People
42:12 When drinking water, it is not proper to do so facing others; one should turn his face to the side. (Mishnah Brurah 170:13 cites an opinion limiting this to drinking outside of a meal. He considers it unseemly behavior for a scholar.)
42:13 We shouldn't look directly at others who are eating or drinking, or at their portions, as this may embarrass them.