"I don't know why you can't just ride a broomstick."
"Because gran has a broomstick! Listen —"
His rant was interrupted by a disembodied voice shouting OI, PADS! and Sirius pulled a jagged mirror from his back pocket. Regulus was horrified to see that specky troll, not his brother's reflection, gormlessly staring back.
"Prongs! Mate, listen, I reckon I've got it, it says here in your dad's mag…"
Regulus rolled his eyes as his brother and the tinny mirror voice fell into a lively, excited discussion. He slipped out of the room, pushed to the sidelines by James Potter yet again.