The insult fuckenstein was created by Deathmarch during his TFans days. It was debuted in a fit of rage at a self-proclaimed very religious person who was acting very "Not Churchy" towards others. This irritated Deathmarch to no end and thus the insult was born.
Lord Madhammer claims this to be his favorite insult.
When to Call Some One a Fuckenstein:Edit
The insult should only be used when you have been pushed into the RAGE category and can no longer contain yourself. Never use this insult frivolously. Ever.