When you're invited, eat heartily, because if they like you they'll laugh, and if they don't like you they'll feel the pangs of death. (Sicilian Proverb) - More Sicilian Proverbs...
A person who happens by a neighbor's house at dinner time, and is invited to join the meal, does not swallow such large morsels as to break the string of pearls around his neck. (Igbo Proverb) - More Igbo Proverbs...