Sirius flicks his wand just enough to dispell the magic-slick on the floor.

"Your old friend was being his usual charming self, Lily. And lo and behold, as usual, he's been saved by a girl. Two, even, well done Snape."

The tiny couchrodile makes its way toward an unoccupied wall, as flailing humans were a great deal less interesting when they were so big. Broken glass clinks as it moves. And Sirius still has his wand up, and his eyes on Snape.

"He thinks Harry gave him a present...but he'd rather be foul than enjoy a present from a Potter, and foul people get their things broken. Tut tut, and here I thought you might learn."

To say that he is still angry would be putting it mildly. God knows how far this would have gone if he and Snape were still alone.