Katy was up in the boys dorms late one night playing cards with Sirius when she suddenly gasped, "Thats awesome" she said aloud. "What is?" Remus asked looking up from his book. "James.." Katy called, "I'm awesome?" James said stepping out of the bathroom a towel around his waist as he began drying his hair with a small towel. "No I have the perfect plan.. all for Vivaldi" Katy said standing up. "Really?" James asked grinning. Katy snatched up the marauders map aiming her wand at it, "I solemnly swear I'm up to no good" she muttered. Then traced a finger around the Dungeons, "Aha.. theres a passage here.. and Vivaldi sleeps up on the seventh floor with the other teachers.." Katy said nodding, "Okay I'm explaining.. first, whose in?" she asked. "Me" James said walking over sitting down on the floor next to her, "Count me in" Sirius said walking over and sitting down as well, "Alright..." Remus said shrugging and walking over. "Okay you know how Vivaldi seems to have quite a bit of grease in that nasty hair of his?" Katy began whispering, the others gathering around, as she continued stating the plan.
"Ready?" Katy asked standing in Pajama pants and a hoodie, wand in hand. Sirius nodded a bucket of paint filled balloons in his hands, Remus grinned "Ready as I'll ever be" he said coming up behind Katy with a book of pranking spells, "Lets blow this popsickle stand then" James said throwing the invisibility cloak over Katy, Remus and Sirius. James was head boy so he easily had an excuse for being out. Katy led the other two behind James, who was pretending to Patrol as he headed down to the first floor around it and down to the dungeons. Katy leading Sirius and Remus down the back way passage she had found on the map. "So Sirius you trash the room with paint balloons at the walls, James will keep watch depending he's already out there and patrolling, Remus you use the spells to mix things up a bit, and I'll change labels on the potions or leave them open infront of the door or under the desk so when Vivaldi sits down he kicks them over" Katy said smirking, "and then.. we have the water bucket trick.." Sirius said, Katy smiled "Remus can do that with spells and that bucket.." she explained as they turned sneaking out to Vivaldi's door, James standing watch making sure nobody was in the room. "Alohomora" Katy hissed, the door popping open as the three of them slid in James just pacing around to patrol and keep watch. Katy huried over to change labels and set two bottles under the desk with the lids off so when Vivaldi sat down he would knock them over and it would form a stinky sticky substance. Sirius began slamming the balloons into the walls forming colorful spots, while Remus hid the main potions book and answer book. Remus then made it so Vivaldi's desk leg collapsed if he leaned against the desk like he normally does, that the overhead bulb was a black light, with streamers balloons and confetti all over the room. Sirius then put the bucket full of water levitating it over the door so that when the door was opened by Vivaldi it poured all over him, but nobody else since Vivaldi normally came in after them. Then they snuck back out and up to the boys dorm again.
"Vivaldi is going to flip out" Remus said grinning as he flopped down on his bed, "That was wicked" Sirius said hugging Katy tightly who laughed "Siri.. Katy needs to breath now" she said, Sirius let her go and pouted. While James was cracking up, "I saw that classroom he is going to flip out!" he said. "And we have him first thing tommorow" Katy said smirking, "Which means.. we need sleep" Remus muttered, "Fine then Remus since you so generously offered scoot over" Katy said walking over and sitting on the edge of his bed, Remus blushed slightly while James noticing this grinned, as Katy laid down beside him, Remus pulled the blankets over both of them laying on his back, Katy drapped an arm over his waist resting her head on his bare chest. Sirius snorted, "Siri.. shuddap you jealous insane mutt!" Remus called. James laughed, when Remus noticed Katy was asleep and stroked her hair smiling as he fell asleep himself.