and all Potterheads.
"Sirius Black," Harry said into a small hand mirror. After a moment, the mirror became clear and Harry looked into the mirror to see a grinning and cheery-eyed Sirius Black.
"Hello Harry! How are you?"Sirius asked. "I'm fine but things are rather dull around here. There's nothing fun to do here except Quidditch,"Harry replied. Chuckling, Sirius asked innocently , " How about a nice prank?" Harry nodded in agreement. "Lets play a prank on a professor. Which professor is the most boring except the ghost Binns?"Sirius asked. "Trelawney!"Harry said. "I have an idea!"he exclaimed and explained to Sirius his plan.
Harry then went to the Room of Requirement and entered a floo network room. He gave Sirius the Ok signal and soon, the flames in the fireplace became green in colour. And then, out from the emerald flames stood Sirius Black himself.