* Sexual Positions: There is no known sexual position with this name.
* Sports: No sport uses this term for a player's position or strategy.
* Business: This term is not used in business or finance.
It's possible this term is specific to a particular niche or community.
To better understand your request, please provide more context. For example:
* Where did you encounter this term?
* What is the topic or subject related to?
With more information, I can help you understand what "double decker position" means.