A woman smiled at a tenant as she stood outside his flat sharpening a scythe, a court was told.
Beverley Jones claimed the scythe was an antique which had got covered in mouse droppings and that she was cleaning it.
Jones, 46, of Dickson Road, Blackpool, pleaded guilty to disorderly behaviour.
She was given a 12-month conditional discharge and ordered to pay £15 victims’ surcharge by Blackpool magistrates.
Martine Connah, prosecuting, said on June 19 about midnight Jones, who had just moved into a block of flats on Dickson Road, walked uninvited into a man’s flat.
She said she was a paranoid schizophrenic and added: “I will kill someone.”
Minutes later the man saw Jones outside his flat in the gardens. She held the scythe above her head and smiled at him then started scraping the scythe on the concrete to sharpen it.
Peter Cave, defending, said his client, who had pleaded guilty at the first opportunity, had spent the night and most of a day in custody after being arrested.