26) Do not tell Professor Trelawney that you saw a grim in her teacup
27) Do not call Professor Lupin, Professor Wolfy
28) Do not call Professor Snape, Batman
29) Do not call Professor Dumbledore Santa or give him your Christmas Wishlist
30) Do not ask Professor Sprout if Hufflepuff is a brand of Marshmallows
31) Do not ask Draco Malfoy if he's part Veela in less you want a lecture about the history and importance of Purebloods
32) Do not start a food fight in the great hall
33) Do not ask Professor Snape what he thinks Harry would look like if Lily Evans married him
34) Do not ask Harry Potter what he thinks he would look like if Snape was his father
35) Do not ask Moaning Myrtle if she was on her period when she died
36) Do not bring a science textbook to potions class
37) Do not ask Professor Dumbledore if he's related to Gandalf
38) Do not try to bring back the Marauders
39) Do not charm Professor Snape's robes pink
40) Do not braid Professor Dumbledore's hair into his beard
41) Do not curse Draco Malfoy to look like Ron Weasley then follow him around bemoaning how poor he is
42) Do not get Luna Lovegood to ask Hagrid if he knows where to find a crumple horned snorkack in less you want to lose a insane ravenclaw and your care of magical creatures teacher
43) Do not call Professor Trelawney, Bug eyes
44) Do not ask Draco Malfoy how much gel he uses in his hair
45) Do not get the first years to sing 'The song that never ends'
46) Do not ask Professor Snape if he keeps his hair greasy to protect his reputation of an Evil dungeon bat
47) Do not ask why the boys need to wear dresses everyday (Because really robes look remarkably like dresses)
48) Do not demand to join the Harry Potter fan club in front of Harry Potter
49) Do not demand Draco Malfoy join the Harry Potter club in front of Harry Potter and/or Draco Malfoy
50) Do not ask Harry Potter and/or Draco Malfoy if their rivalry is caused by UST