Most embarrassing boner story

My most embarrassing story took place when I was a younger man. My friend and I arrived at my house to fetch my playstation.
Walking into the garden, i heard music and laughter. I slowed Craig down and told him to keep quiet as we approached the back door. Peeping through the curtains i saw my mother and a friend of hers from the gym in the lounge,  she was dressed like a slutty aerobics teacher with black heels, bending over as he took photos of her and shouted instructions. I was so shocked i just stared at them doing things that I didn't know she could do. I stepped away and Craig peered through,  his mouth wide open and his eyes fixated. He pulled me back to look and when i did, she was bending facing us and he was fucking her
She saw us standing there and lost her mind! Ran to me and pulled me inside,  screaming at me and saying that I don't know how much trouble I am in.
Dragging me to my room,  she whipped me with her belt. Still dressed up and guests listening, she whipped me and shouted profanities. I felt my cock harden in my shorts and I  put my hands on my crotch to cover it up. As she swung her belt, it wrapped around and hit my knob head...i exploded all over my shorts, cum sticking to my legs and balls.
They burst out laughing at my orgasmic humiliation while I scampered off to clean myself.
After a shower, I left my friend with my mom and her stud - soon enough the moaning echoed throughout the house, and she was enjoyed by my friend too