"She may not have known me," Q corrects him. "But we weren't exactly chummy." He looks vaguely horrified at the idea. "As far as I can tell, yes." He shrugs. "As far as I know, I'm the same me he knew and he knew me better than anyone." It's impossible for him to be objective about Severus. "He hasn't said anything, and I think he would under the circumstances."
Q laughs with relief. "That's your clue right there Sirius! No need for any confusion. If I start to stutter, he's here," he taps his forehead, "and you need to bash me with a rock or something." He laughs again. Why didn't he think of that before?!