Women using poison to murder their husbands is an old trope – one going back as far as Claudius's poisoning, which implicated his wife Agrippina. "Arsenic Annie" Nannie Doss saw off four husbands, as well as most of her family, in the span of four decades (she confessed to the murders in 1954). And now a Brazilian woman may soon be added to this pantheon of gloom. Although this alleged attempted homicide was unsuccessful, the method will certainly go down in history: she allegedly put poison in her vagina, and invited her husband to perform oral sex on her. The man became suspicious while down south, surprised by an "unusual smell". He took her to hospital, where the poison was found.