Prank gone horrifically wrong

A teenager, known for cunning pranks, accidentally hanged
himself on a noose while attempting to pull a prank to his sister.
The noose had been put up by his family as a Halloween
decoration and the boy decided to use the front yard decoration to scare family members.
When the family members saw him hanging on the tree, they dismissed it as one of his usual pranks, only to realise the gravity of the matter when it was too late.