Being a cup he's in touch with his feminine side?
That's the only thing I could come up with, really.
It might be useful, however, if you needed a significator for a transgendered person. One of my daughter's is transgendered, so I'm serious here---it really could be used for that.
Or maybe it might signify someone who cross dresses.
I'm walking a fine line here, though. I'm adamantly opposed to trying to find out if someone is gay or lesbian with the cards and these suggestions of mine do kind of verge into that territory, I think. There would be very rare instances where I'd read this King that way in an actual reading. And above all, I'd never specifically and purposely ask the cards to try to find out whether a man is gay and effeminate or transgendered or cross dresses or anything like that.