I didn't make this i found it on FB and found it really funny :) Enjoy!
1) The Giant Squid is not an appropriate date to the Yule Ball.
2) I am not allowed to sing, "We're Off to See the Wizard" while skipping off to the Headmaster's office.
3) I am not allowed to take out a life insurance policy on Harry Potter.
4) I am not allowed to ask Dumbledore to show me the pointy hat trick.
5) I am not allowed to give Remus Lupin a flea collar.
6) I am not allowed to bring a Magic 8 Ball to Divination.
7) I am not allowed to say that Seamus Finnegan is "after me lucky charms."
8) I am not allowed to start a betting pool on this years Defense Against the Dark Arts teacher. It's taste-less, tacky, and not a good money-making strategy.
9) I am not allowed to joke about Remus' "time of the month."
10) I am not allowed to make light saber sounds with my wand.
12) I am not to refer to the Accio charm as "The Force."
13) I am not allowed to claim that growing marijuana or hallucinogenic mushrooms is "Extra Herbology Work."
14) I will not use my socks to make hand-puppets of the Slytherin-House mascot.
15) If the thought of a spell makes me giggle for more than 15 seconds, assume that I am not allowed to use it.
16) I will not lock the Slytherins and Gryffindors in a room together and bet on which House will come out alive.
17) I will not charm the suits of armor to do a rendition of "The Knights of the Round Table" for the Christmas Feast.
18) I am not allowed to declare an official "Hug A Slytherin Day."
19) I am not allowed to sing my own personal spy music while wandering the hallways.
20) It is not necessary to yell, "BURN!" Whenever Snape takes points away from Gryffindor.
21) I will not say the phrase, "Get a Life" to Voldemort.
22) First years are not to be fed to Fluffy.
23) I will never ask Harry if his Voldie senses are tingling.
24) I will stop referring to showering as "Giving Moaning-Myrtle an eye-full."
25) I will not make, "OMGWTF" a spell.
26) It is not necessary to yell, "BAM" every time I Apparate.
27) I will not steal Gryffindor's sword from Dumbledore's office and use it to patrol the hallways.
28) I will not poke Hufflepuffs with spoons, nor shall I insist that their color's indicate that they're "covered in bees."
29) "I've heard every joke possible about Oliver Wood's name" is not a challenge.
30) I will not go to class skyclad.
31) I will not use Umbridge's quill to write, "Told you I was Hard Core."
32) If a class-mate falls asleep, I will not take advantage of that and draw a Dark Mark on their arm.
33) House Elves are not acceptable replacements for Bludgers.
34) I will not start every potion's class by asking Snape if the potion is acceptable as Body Lotion.
35) I will not call the Weasly twins, "bookends."
36) I will not call the Patil twins, "bookends."
37) I will not call the Defense Against the Dark Arts teacher Kenny, even if he is wearing an orange anorak.
38) There is no such thing as a were-thylacine.
39) I will not give Luna Lovegood Coast-To-Coast AM transcripts.
40) Tricking a school House Elf to strip of it's clothing does not make it mine. Yes, even when I yell out "PWND!"
41) I do not weigh the same as a Duck.
42) I do not have a Dalek Patronus.
43) I will not lick Trevor.
44) Gryffindor Courage does not come in bottles labeled, "Firewhiskey."
45) I will not dress up as Voldemort on Halloween.
46) It is a bad idea to tell Snape he takes himself to seriously.
47) I will not tell Sir Cadogan that The Knight's Who Say Ni have challenged him to a duel, then have all the students say, 'Ni' from various directions.
48) I am not the King of the Potato People and I do not have a flying carpet.
49) "To conquer the Earth with an army of flying monkeys" is not a career choice.
50) I will not tell the first years that Professor Snape is the Voice of God.
51) But yes, I will do it all anyway.