As Harry finds out that he is in the HI in the Sky room he finds out that the hat has kept his word and put Hermione and Ron with him. Also Harry got a letter from him that read:

Harry,

Thank you so much for the sack the misses was very pleased to see that she hasn't had some of that in ages. Also you have given me an idea, if you give me around 4 days I can make you some wizard weed to finish off you collection of drugs! Ok well if you still need to have your stack hidden just give it to me in the great hall so you don't get caught!

Your friend THE SORTING HAT

"Wow" says Harry "I didn't really know the hat was into this stuff!"

"So Harry when are you going to teach us?" says Ron

"Yes Harry can u show us now? No one is in here! So show us!" says Hermione happily

"Ok fine!" says Harry "just say inhale la drugs"

"That sounds easy," says Ron and Hermione

After they say this pipes magically appear and the ends are in their mouths

"Now what do we do Harry?" says Hermione

"Inhale!" says Harry very angrily!