Tacitus claims that Nero considered poisoning or stabbing her, but felt these methods were too difficult and suspicious, so he settled on – after the advice of his former tutor Anicetus – building a self-sinking boat. Though aware of the plot, Agrippina embarked on this boat and was nearly crushed by a collapsing lead ceiling only to be saved by the side of a sofa breaking the ceiling's fall. Though the collapsing ceiling missed Agrippina, it crushed her attendant who was outside by the helm.