I came to gym wearing a tiny sport bra barely covering my breasts. I thought that today my trainer would make me train my back but he asked me to do cardio exercise which involve a lot of jumping exercise. While I was doing them my boobs were all the time popping out of my bra, I felt embarrassed but then I noticed that my trainer is enjoying all this. I became angry and confronted him saying that I know it was his evil plan to make ne do uncomfortable exercise so that he can get a sneak peek of my big natural breasts. I notice that he is hard and give him angry JOI. At the end when he is about to cum I take my phone and start recording him. Now I have a proof of what a pervert he is. I tell him if he misbehaves again I will show this video to his colleagues and friends.