I'm not sure what you're asking about with "madam jo". Could you please provide more context or clarify your question? Are you referring to a specific person, place, or concept? The term could potentially refer to:

1. A formal way of addressing a woman (Madam)

2. A shortened version of "Madame" or "Mademoiselle"

3. Possibly a name or title for someone

If you can give me more information, I'll be happy to help you further.