By Rabbi Julian Sinclair, February 16, 2012
Years ago I found myself at a Shabbat table in Jerusalem where the challah was actually thrown to the guests around the table. I was shocked. Since when were adults allowed to throw food?
Rabbi Yosef Karo author of the Shulchan Aruch explicitly forbids hurling bread. However, he also says that one should not place it directly into another's hands, for that is how one treats mourners.