I understand. Sometimes as a bull -- and I'm very, very well-hung -- I get very intimidated by very well-hung men like me. I'm not sure I'd ever suck their dick, etc, but I feel to experience something vicariously through them. It all depends on the man, and my mood. I do like to see naked men with big dicks having sex with women. That is a big turn-on for me, just like watching two gorgeous women making love. Depends...
There is a lot of gray area, for sure. I cannot imagine myself sucking a well-hung man's dick, but it's always a possibility if the right circumstances present themselves. I don't rule out anything like that completely, but I don't fantasize about having full-on sex with a man. I do, however, like to watch other well-hung men masturbate (if they're not well-hung, I lose interest). It's a competition-thing, really.