Act like your way to happy to be in potions. (especially if you're not a slytherin)

When someone falls asleep its totally fine to draw on their face.

Throw Mrs Norris into the black lake.

If you forgot to do your homework just say fluffy ate it.

Hop on a broom and fly around singing "Defying gravity"

Start a chain Howler.

When it starts snowing sing let it go

Create a rumor that a cupboard in the school leads to Narnia.

Each time you see Snape around Christmas yell,"run its the grinch".

If you see a death eater with a white mask sing anything for phantom of the opera.

Tell people that the real way to time travel is not with the use of a time turner its doing the Time Warp.

Go around hissing a people and when people ask you why say,"Harry hissed at people and that made him the most feared person in the school."

In the battle of Hogwarts yell," THIS IS HOGWARTS!" Then rush into battle.

Refer to the Accio charm as the force.

Every time you see a ghost sing Casper the friendly ghost song.

For Christmas give Sirius and Remus a flea collar.

Every time Umbridge does her, "Hem hem" thing go up to her and give her a cough lolly.

When something that makes no sense happens just roll with it.

Every Time you get a new pet bring it to Crookshanks to make sure its not a creeper.

When meeting voldemort its not wise to laugh no matter how funny he looks.

Tell first years to befriend the whomping willow.

Sing the song that never ends to the whole of Slytherin.

Walk around with a ring in your hands well muttering my precious and hiss at anyone who tries to take it from you.

Ask Gilderoy how he ever became famous.

For Christmas dress up as Santa and give apples to everyone.

Merry Christmas everyone and if you don't celebrate it enjoy the last few days of 2014.