I learned that in a Japanese bath house in 2019 by accident. My gay friend there apologized for not giving me heads up, saying gays in Japan go by body language to determine anal, there isn't really consent culture like in the west.
I had a fantastic time with an older Indian guy who came to give me a massage in my hotel room... when he saw the reaction of my cock to his touch he moved onto making it a full blown sexual thing... He straddled my head offering me his cock while he sucked me and then tongue fucked my tight hole.. (I submitted to him licking his arse and pushing my tongue deep into him... he turned me over and fucked me in the missionary position before coming deep in me... I loved it and paid him well... he serviced ma e few more times too....