For myself, the humiliation factor is a huge turn off. I love sharing my GF, will gladly suck off her bull and do clean up work if asked. But since I am sharing my GF, I want her bull to show some respect - evan as I am licking his cum off of his cock.

I am bi and my GF absolutely loves it. It is how we got into the cuck lifestyle in the first place. She had a fantasy of wanting to watch me suck off a guy. At first I wasn't too sure, but the more we roleplayed it, the more the idea sounded awesome. Now I will gladly suck off any Bull she wants and of course do the clean up after.