1) Do not ask Professor Sprout if you could grow Weed for extra credit.
2) Do not poison Professor Snape with foxglove to see if a Bezoar works on muggle poisons.
3) Do not play the Batman theme song everytime Professor Snape what's into the room
4) Do not dangle a ball of yarn in front of Professor Mcgonagall when she's in her animagus form
5) Do not show Hagrid Pokemon cards and convince him that they're real animals
6) Do not invite the giant squid to be your date for the yule ball
7) Do not spike Professor Dumbledore's lemon drops with firewhiskey
8) Do not paint a mural of a full moon in Professor Lupin's class and ask him if he has an urge to howl at it
9) Do not give Professor Mcgonagall a bottle of catnip wine for Christmas
10) Do not ask Harry Potter if he has water powers because he looks like Percy Jackson
11) Do not ask Professor Umbridge if she had plastic surgery because she was born a toad
12) Do not ask Professor Umbridge if she has a cat fetish and the arguments between her and Professor Mcgonagall are caused by Sexual tension
13) Do not send Professor Mcgonagall a cat collar with a name plate reading 'Professor Kitty'
14) Do not send Professor Snape grease cleaner with a note that reads 'For your hair' for Christmas
15) Do not ask Nearly Headless Nick if he saw which direction the ghostbusters went
16) Do not ask Professor Flitwick why his house's symbol is an eagle instead of a raven
17) Do not call Professor Lockhart Blondie
18) Do not play the song Ways to be wicked every time the Weasley twins enter the room
19) Do not charm to the great hall to rain lemondrops on Professor Dumbledore
20) Do not jinx all the Slytherin students hair Gryffindor red and gold
21) Do not spell the house elves blue and call them smurfs
22) Do not ask the muggleborns if they believe that having magic is a sin
23) Do not ask Hermione Granger where werewolves come from and how they started, she will go crazy trying to find the awnser
24) Do not ask Professor Lupin to bite you, he will not think it's funny
25) Do not ask Professor Trelawney if she's dating Firenze the centaur.