I've had the opportunity sit in the Husband's Chair and watch before.
First time I didn't self-pleasure, just played it Cool and politely watched. Had kind of mixed emotions going on to.
Second time, I was really turned on, pulled it out and prematurely ejaculated, spilling my seed about a minute and a half in, quite humiliating, but it wasn't noticed as they weren't paying attention to me.
After that on other experiences, I enjoy myself a lot more matching my strokes to the their rhythm And just edging the whole time and not cumming.
I like the idea of undressing her for Black Bull. Watch closely next to her as she sucks his Black Cock and maybe helping put his Big Black Cock inside of her pussy before he or they start pounding her hard