"Not exactly," Q says. "I wouldn't trust my Sirius to help. I mean the Sirius I knew," he hastens to clarify, flushing deeper. "Not mine in the sense that...well, you know," he finishes feebly. "I really just have a few questions," he continues hopefully.
"Really?" Q can't help but be curious. "As far as I can tell, I'm where I'm supposed to be dimensionally, just skipped in time. I haven't done anything to check though." I don't want to, is left unsaid but plainly obvious. "Um," he looks away again, "there wasn't anything specific," he says evasively. Q is a rotten liar. "You were a bully and you teased people quite cruelly about things they couldn't help or had no control over. To be fair," he goes on, "it wasn't just you. Potter was a very enthusiastic participant."
Whoa! Bad craziness! That's really got to mess up your head! David Gerrold's The Man Who Folded Himself is the most confusing book I've ever read.