I accept Tommy's dare number 1 and I challenge anyone interested into what I like to call:
The Evilest Dare of All
1. At one point,Pansy or Hermione must sing "Material Girl" (Madonna | Material Girl lyrics
2.Must include the words pickle, squish, vice versa and toot.
3. Must center around a bad hair day, a psycho ex girlfriend and a ladybug named Phil
4. Luna must marry Phil and Neville must be jealous
5. Harry must wear a dress. You can choose the situation!

here's another one!
1.Main character can be Malfoy, Snape or Aunt Petunia
2.Must include the words: dollop,
3.Dumbledore must make an appearance, wearing/ talking about socks.
4. The setting must be Hogwarts School Halloween party.
5. Hermione must convince Ron to go as spiderman.

*note* One of my friends tried to convince this guy (who has almost red hair) to go as spiderman, it was rather funny...