Your Actual Real Fantasy? --> I think most men fantasize about 2 (or more) women at the same time but other than that ....
... putting a collar on my submissive wife, going out and making her
masterbate in front of and service other males. Telling her each step on how to proceed and her having to beg to go to the next step. Finishing this out with her having to service a fairly well endowed male 9"-12"(preferably black at some point since she has never been with anyone who is black)
..and if she doesn't "get anything right" she has to repeat it until she does ;)