I want to know…

I want to know what the most humiliating experience you’ve ever had.
Tell me all about it!

I’ve had my share of humiliating experiences, but the one that sticks in my mind was something my ex-wife did.
She was bisexual, and we had a girlfriend that we had sex with separately, and in a threesome depending on the mood.
One night she came over and had been drinking. She was horny, but was on her period, and wanted to watch us have sex.
My ex told me to strip and get on the bed, she left the room and came back with the KY and wearing just her 7” strap on.
She told me to get on all fours, lubed me, and fucked me in front of our girlfriend.
They both made comments like take it like a man, and you’re ass is gonna be sore tomorrow.
The humiliating part wasn’t just her watching, but the fact my ex chose this method to introduce a dynamic of our relationship that had been private.