ushi no toki mairi, a traditional Japanese practice where a person visits (参(まい)り (mairi)) a shrine at approximately 2 AM in the morning (丑(うし)の時(とき) (ushi no toki)) in order to nail a straw effigy of a person (藁人形(わらにんぎょう) (waraningyō)) to a tree and wish for that person's death