The filthy frank phenomenon, is a phenomenon when a famous / infamous person, usually an idol (like Filthy Frank and Senzawa) suddenly abandons their existing career to pursue a new career (same or different) but with significant personality change.
They usually disconnect themselves completely from their old life and act as a separate entity to their past , though some events may trigger flashbacks of their past and sometimes brief actions that mimic their past behaviour may surface.

A term used to reference cannabis/marijuana/weed.