“Well, I’ve had Quidditch practice, Professor,” said Harry, who had been scheduling practices every time Slughorn had sent him a little, violet ribbon-adorned invitation. This strategy meant that Ron was not left out, and they usually had a laugh with Ginny, imagining Hermione shut up with McLaggen and Zabini.
-page 243, Harry Potter and the Half-Blood Prince
i'm sorry to say that i kind of fell on my face for this one. i made like 5 drafts before i decided on what scene to draw, being reminded after poring over the 6th book of how much quidditch took place. i forgot how hilarious the majority of the book was, aside from the Horcrux Hunt and Malfoy Obsession. actually... the latter might belong in the amusing part.
Potter (c) Rowling