The best prank of all time... brace your selves, because this one is epic and deserves an Emmy award.
So, Listen... Make a party with lot's of people, including your target. Make a special sort of food (which only the target would eat), which includes a strong laxative medicine. Before that, butter the floor to the bathroom, so that it is hell of a slippery hehe...
After your target has eaten the laxative food or something, he will feel funny and will go to the bathroom to take a dump fountain....
But have no worries ! The buttered floor will make him slip, and he/she will fall on the floor and he/she wont be able to hold he's/she's luggage... he/she will shit him self.
Don't forget to add cameras at the entrance of the bathroom or something.... and add cameras at guest room..
Your nr:1 Jackass fan, G.T.
I love you guys,
You do hell of a good job and you always make me laugh...