I (M29) got busted yesterday by my friend’s sister, we will say her name is T for identity protection (F24). I have known T for roughly 20 years now and over the last 2 years her and I have grown closer. It’s even to the point we often discuss more personal topics. She knows I’m submissive and a masochist and I knew she was a curious domme based off previous conversations. Yesterday I was over her apartment to drop something off and she made a joke and finished with “I’m just busting your balls.” My response was “I bet you wish you were.” She blushed and said “you’re right” in a bit of a sarcastic tone. And I replied “so do it.” And after a few more exchanges I find her pushing me to the wall nearby and spreading my legs apart. Then BAM her knee drove right into my balls. It caused me to jump and fall to my knees right on impact. I closed my legs and she just laughed. “Keep them open bitch boy.“ and so I did. BAM BAM BAM now her silver high heels made multiple hard kicks to my balls. I’ll admit I’ve never felt so much pain in my life from how she does it but I loved it. By the time she decided to stop busting me, (I left it open to her to decide) I found myself in literal tears and my balls bruised. “I love making a grown man cry.” She said with a mean giggle.