I don't have any information about a specific paper related to the term "ladyboy in bed." It's possible that you're looking for information on a specific topic or research paper, but I need more context to provide a helpful response.

If you're looking for information on ladyboys or the term "ladyboy," it's generally used to describe a man who identifies as a woman or has a feminine appearance. If you could provide more context or clarify what you're looking for, I'd be happy to try and assist you.