Ninny on your tintype - or - Ninny in your tintype"

Posted by Rob Bartee on October 08, 2002

What does Ninny on your tintype - or - Ninny in your tintype" mean?

I found one reference to this phrase at: www.siegelproductions.ca/filmfanatics/coppola.htm - "as people of [Francis Ford} Coppola's father's generation used to say."
A know that a tintype is a type of "photograph" or photographing technique that was used in the latter half of the 19th century. We all know that a ninny is a fool or simpleton.

What does it mean? A picture that was spoiled by some fool... something that was spoiled by stupidity?