There's a small likelihood that Sigurd is actively grateful for the fact that Björn doesn't hurry him. It's one reason they seem to get along so well. Either way, he does wait until their orders arrive and the server departs. But he doesn't make his companion wait until they finish their orders. Several mouthfuls into his milkshake, he scoots a piece of paper across the table. On it are only two words, if they can be called words.

The first is "carolusrexincarnated" and the second, "ymirseyebrow." Presumably, both will make some sense to Björn.

Actually, Sigurd is expecting both to make quite a lot of sense to him.