When Severus grins, Lucius thinks that may just be the most disturbing thing he's seen all day. Including the fish. He's having the oddest flashbacks to when he was a prefect. However, he leads the way with mild amusement.
"Oh, yes, Rodolphus, that's just the sort of topic I find most appropriate before a meal," he smirks. That's why he lost so much weight during the time the DE's were using his house as a base...somehow violence was always the topic. Not that he didn't enjoy violence, mind, just not with food. He sighs, feigning a look of being put-out, "Though, I suppose, what did I expect? It's either violence or potions, in this company."