Fred and George came up with an idea but needed a older wizard's help. They decided on Charlie to help them but they'd need to be sneaky.
Fred used some of Lee's money to buy some Cauldron Cakes and went into Charlie's compartment.
"What are you doing here little boy?" a 6th year kid asked
"Word to the wise, Brett, don't underestimated this kid he is a prankster." Charlie said
"What could this little twerp do?" The kid Fred identified as Brett and a git.
"Famous last words, git, Charlie can you doing a heating charm on these cauldron cakes?" Fred asked
"Sure, Fred."
Charlie performed the charm and handed the cakes to Fred.
As Fred left he handed the heated cakes to Lee would waited a couple of minutes and went into the compartment.
"Hey you're Fred and George's brother right?"
"Yes" Charlie said surprised at this new kid.
"Well I just met them and I want to give them a taste of their own medicine."
"Really?" Charlie was interested in this kid
"Yes can you perform a charm that makes them explode when someone bites into them?"
"Sure here you are."
"Thanks"
Lee walked slowly and as he reached the compartment with the gits who stole his trunk he took out a unjinked cake and began to eat it and savor it.
"Give us your cakes, kid!" A gruff voice demanded
"Alright here." Lee said shaking with what the Slytherin thought was fright but was laughter. He ran to his compartment.
"Three...Two...One..." Fred, George and Lee counted down when they heard some screams and people moving into the hall. Fred stepped out of the compartment and aimed a Filibuster firework at the Slytherin going the opposite way.
He fired and it all went wrong...bababummmm...
The Slytherin tripped on their robes and the firework continued on thru the train and Fred and George's luck ran out when the firework flew into the annoying room when the conductor was closing it after visiting the little conductor 's room it bounced around in there and the train slowed to a stop. People began to poke heads out and ask
"Why has the train stopped?"
Fred was thunderstruck but said
"George, my clone, we are in trouble."
AN: Never eat yellow snow