We're the rooftops in Jerusalem, or even the Beit HaMikdash, considered holy? With implications for where one can eat the Korban Pesach. The discussion raises the question of how the Beit HaMikdash is a building. Also, a new mishnah on the actual group meal of the Korban Pesach, when two different groups are crowded in one room, where they'd face away from each other. A waiter traveled between the groups, being part of only one, so he too would turn his face away. So too a bride would turn her face away in shyness. Plus: R. Huna's etiquette, when offered honor as a distinguished guest. Here too, he's expected to turn his head. And he explains his breaches of etiquette as the appropriate conduct. Likewise, R. Yishmael, who related to the portions and expectations differently from R. Huna.