twins were very versatile in planning ways to troble the ghost. what is their latest trick to frighten the ghost ?

The Otis twins played their tricks on the Canterville Ghost. They stretched their strings across the corridor, over which he tripped in the dark. Once he slipped on a butter-slide, which the twins had constructed for him on the staircase. That was very annoying to the ghost and he decided to teach a lesson to the twins, giving them the fright of their lives. The ghost planned to appear in a grand disguise which took about three hours to get ready. He wore big leather boots, took a horse pistol and crept into the corridor. When he reached the Otis twins bedroom, he found the door slightly ajar. In order to frighten the boys at once, he flung the door wide open. A heavy jug of water fell right down on him, wettinh him thoroughly. The twins  burst into loud laughter and the ghost had no choice except to flee. 

Hope this helps u..........