Well, that's an interesting theoretical issue, I guess. Maybe, as many of our "special" friends often insist, we are not a cuckold couple but stag and vixen. However, I (hubby) very frequently flirt with the idea of her having sex with the bull alone for some time, until I come home and catch her, then join. I also like his cock being bigger than mine (it's really huge) but it's for her pleasure, not my humiliation. But you're right, there is no sub from my part, only worshipping her. Stag or cuckold, that's not going to cause me a crucial identity crisis.