He can, but he wasn't--at least, not in any intense sort of way; he's always hyperaware of peoples' reactions to him, though, especially people he's already learned to be wary of. Occupational hazard--and preoccupational, in his case. I know Sirius wasn't saying that out loud, or with any particularly obvious facial contortion but... he got the gist of it, having seen similar expressions on that face before.
"Only the eternal question, which I won't ask now, as we've rowed enough in Minerva's home for one day, and this." He hands Sirius a card, black with silver writing and a blue, bronze, and green quetzalcoatl winding around the text.
Pennifer Excetra Custom teas, meads, and assorted brews V.P.B. Clayborn, MB +44 (0) 1843 224424 Margate, Kent mail-order encouraged