I know this thread is from a women's pov, but if I can, I'd like to insert someting as a bi-male.
I was "tutored" in the "art" of fellatio by a Black guy when I was part way thru high school. In those times, there weren't many categories, names or slurs, or, at least when there were, the person was shut down pretty fast.
It took me about 10 days or so of every day with him to deepthroat him. He was about 10 long and about 2 1/2" in diameter. I learned to keep my head aligned with my throat/neck to allow him to get in further (kind of like what sword swallowers do). The day he came while he was balls deep in my throat was fascinating and I was so turned on that...well...I was really turned on. I could feel his juices flowing into my stomach as I felt his cock pulsing and his balls tighten.
After that day, he introduced me to a few friends of his, and I learned even more.