Will you share your meal/drink on the same plate/glass with your friend?.

Sometime a when you’re eating/drinking something a friend could just ask some of your food/drink,whether or not he/she’s curious,hungry,or else,will you honestly share it on the same plate/glass if he/she demand so?,will you judge them by relation,condition,background,or else?,do you feel convenient doing that?,do you feel ashamed doing that in public?,what if that person is a stranger? (please be honest).