I am a 28 years old man. A few days ago I was in Amsterdam
and I paid visit to a Thai sex worker.
During the session I noticed some attributes of her body (and her voice tone) that made me thinking, although she had all the female organs, she might have been a man before changing her sex.
She performed a massage to my penis with her breast (unprotected) and then she gave me (protected) oral sex. No penetrative sex at all.