衛生紙
Toilet papering (also called TP-ing, house wrapping, yard rolling, or simply rolling) is the act of covering an object, such as a tree, house, or another structure with toilet paper. This is typically done by throwing numerous toilet paper rolls in such a way that they unroll in midair and thus fall on the targeted object in multiple streams. Toilet papering can be an initiation, a joke, a prank, or an act of revenge. It is common in the United States and frequently takes place on Halloween, April Fools' Day, or after the completion of school events such as graduation or the homecoming football game.