A/N: In honor of Fred and George's birthday, I decided to write them this fic. It's a little late, but better late than never! It's just a little plot bunny I had and might be horrible. Leave me a review to let me know what you think.
"We need a way to prank Harry Potter and Snape, we need a way to prank Harry Potter and Snape, we need a way to prank Harry Potter and Snape," Fred and George intoned, walking past the room of requirement. They wanted to find a way to prank Harry and Snape before deploying their portable swamp against Umbridge. When the door appeared, they walked right in like they owned the place. Once inside, they saw a small table with two round flat shiny things and a note on it.
These are CDs. They are labeled and if you point the spell canto musica at them, they will cause the songs on them to play whenever the person labeled on the CD walks into the room.
"Wicked," Fred and George chorused before proceeding to cast the spell.
Later that afternoon, Harry walked into the Gryffindor common room. All of a sudden, the Harry Potter theme song began to play, with no discernible music source. Everyone in the common room broke out into laughter at once.
The same thing happened that night at dinner. However, Snape was running late. When he finally entered the room, music started. Dum dum dum dum da da dum da da dum, the imperial march blared. All of the students started laughing, and it took Umbridge a half hour to regain order. Fred and George grinned at each other. They knew that no matter what anyone tried, the spells wouldn't go away for a week. The next morning, they deployed their swamp and left Hogwarts as legends.