The greatest humiliation would be if my mom's pussy was sprayed with sperm, especially because I came out of that hole and he, the bull, thereby marks his property. but also her face and in her ass would be enormously humiliating for me, but make me horny.
For me it started when I saw my mother's lingerie collection for the first time. Since then I often imagine her wearing these things in front of horny strangers and letting them fuck her.