This is a split board - You can return to the Split List for other boards.
Better question is why do you want it?
You know what's more fun than using Celebration or Splash? Using a move that's actually useful.
I'm pretty sure you have to go to a pokemon center store (irl, not in game) within a week or two before/after your birthday and you'll get something with celebration
You are not allowed to request a sticky.