This just popped into my head.. not sure why where the thought just originated, and I don't think I have a submissive personality in the bedroom (though I love to please, so maybe I do in a certain sense)
..but I just thought it would be fun sometime have a partner tie me up naked on the bed and use me as her sex toy until she was too worn out to orgasm again. Anything she desires. Maybe because I love to please and this would be a way for her to be 100% in control of how I gave her pleasure.