My most humiliating secret is that time when I followed a stranger (met online) into the woods at night to let him fuck me in the ass. He took me in his car and on the way, he made me suck his dick whenever possible. When we arrived, he stripped me naked and pounded my ass mercilessly while holding my face on the ground. He made me say that I was a whore, a dog in heat, a desperate slut, and many more humiliating truths. He made me scream that I was a cock hungry bitch for all the forest to hear. I loved it so much I had an orgasm from my ass, instead of my clit. Once I was back home, I sent him a pic of my butthole still shaking of pleasure.

Edit: forgot to say he was 19, and I was 24.