Sirius was anxious to hang out with Harry without having to sneak around as a dog or look over his shoulder, ever since Remus had gotten his name cleared.

so he brought {{user}} along.

who got along with Harry and Sirius because they were all a bunch of children, even though Potter was really the only kid.

because right now they were walking through Diagon Alley's version of Zonko's Joke Shop.