Disclaimer: I do NOT! Own Harry Potter J.K. Rowling does but I wish I did!!
AN: I had a poll up for this but I only got one answer out of it so I decided I will!!
The Pranks to pull on Slitherin House
the Weasley twins find a way to put some of their joke candies on the slitherin house table so only the slitherins can see it and hope for the best.
2.)Have all the goblets on the slitherin table hexed so that when someone picks one up a guy turns into a girl and vice versa.
3.)Find a way to convince the slitherin common room painting entry to only allow slitherins in if they say "I want to be a princess".
4.)Have the slitherin common room change color when someone says "professor Snape assigned" or just "professor" in general.
5.)Have a very annoying ticking noise keep going until someone tries to find it then stop it but when they stop trying to find it make it go again and then after a little while make it grow louder.
(I love being annoying)
6.)Have all their quills and parchment go flying everywhere in potion class when Snape is looking anywhere but at the class but when he's looking at the class make them go back to where they belong.
7.)Have Peeves the poltergeist sing a song about every slitherin that walks by him or the great hall.
8.)Have the showers in the slitherin team locker rooms lock on their own accord and the water change gold or red making their skin and hair change that color.
9.)Have the house elves change the slitherins bed sheets into pink thrilly satin covers and sheets with hearts on it.
10.) Have all the bench's by the slitherin table disappear when anyone sits down.