Mad hair day for comic relief

In England they have what is called Red Nose day. It is basically a day where you do something funny for charity. So for Riley's school they had Mad Hair day and the kids could do their hair crazy if they brought in a donation.
Riley wasn't very keen to the idea but warmed up to it once he got to school and saw all the other kids hair.
His hair is so thick and long that is hard to do anything. He saw it and laughed so hard saying he looked like a who from who-ville.