My daughter is a Potter buff. The other day, the incredibly amazing T posted a picture of her daughter wearing a Happy Potter themed T-shirt - later that day, I picked up my daughter, and she's got a Potter themed pair of sweats going, one that read "Hufflepuff". I sent a pic of my kid to T and then my daughter and T were trying to decide which Hogwarts House I would, I don't know "be a part of"? I don't know the correct terminology.
Today, T sends a link to a quiz I can take to see how they did and that is where the thing at the top of this post comes from. Turns out that both my kid and T know me pretty well - warms my heart oh so much!