What is your most embarrassing sexual moment?

My most embarrassing moments of which there are two at the top of my list are...

1. I was 24, the family was having a weekend get-together. It was the middle of the afternoon and I was feeling a little aroused for no particular reason. So, I went to my old room to release some of that arousal. As I'm laying on the bed, pants unzipped, hard cock in hand, stroking one out the door opened, and in stepped my sister. I had absolutely no time to hide what I was doing. She turned and left as fast as she entered. I'm not sure what all she saw but she knew I was jacking off. Talk about an awkward rest of the weekend. Now being 30 years later I still get harassed by her. Still embarrassing even today.

2. I'm going to keep this one short because I want to post the story as a stand-alone read... A girlfriend's mom woke me in the middle of the night. Let's just say I slid my cock in, out, back in and BAMM I shot my load. Talk about being embarrassed and apologetic for cumming so quick, but in my defense she was hot, she was 56 and I was 21. I fantasized about her often and never in a million years thought it would come true.