Yes, drinking your partner's golden liquid can be a turn on.  My Mistress also do that to me, I'm Her private toilet, when place is possible and She needs to vv, then will sit on my mouth, i drink every single drop of Her golden liquid, this is a very common play in bdsm

Yes, it is good fun and erotic for both, if you and your partner both enjoy it in this way, if your partner can control, do it bit by bit and let you drink it slowly, then it is even better,

If u prefer that way, no problem as long as both of you enjoy it. My Mistress prefer i drink every drop, not miss one like a real toilet

She is my Mistress and owner, we love bdsm play, my Mistress can do whatever She enjoys, as long as it is safe and within our limit

Orgasm control is another common play in bdsm as well. My Mistress lock me with chastity device, She  control me when I can have erection as well, depends on Her decision, then She will release me , can be few weeks or few months.
Anal game is another common play, especially for male slave, apart normal butt plug, there are anal jewellery available in the market, my Mistress ordered me wear this kind of anal jewellery all the time, can only take it out for normal function, the anal jewellery is made of stainless steel with crystal at the end, so it can please Her eyes whenever She ordered me take off my pants and in doggie position ready for spanking.

For anal play, the most important thing is cleaning up before play. It can be anal sex, or even up to fisting, taking the whole hand or two hands in the ass if the slave is able to take it, it can be trained slowly. Lots of Female also love to fuck male slaves in the ass with a strap on dildo, this can be considered as power exchange, it is a very dominant action for Female take the action, fuck male slave with strap on dildo, because man is with the cock and traditionally take the fucking action. The more humiliating play is the male slave lock up with chastity device and the Female top fuck the slave's ass, the male slave completely give up himself  to his Mistress or Female.