by Poetoxicology
I was dating a girl & spent most nights at her apt.. One Saturday morning after breakfast, we went back to bed. We had been fucking for a very long time with her slowly riding me. We were totally exposed, having tossed the sheets off. We were both trying to hold back our orgasms, when her younger brother (22 yo) walked in, not knowing we were home. I said something like 'Oh shit," and she turned to see him in the doorway. I remember she just squeaked, "Oh," and we both came in an explosion. When we were done we looked again, and he was gone. He apologized several times that evening. She was very embarrassed, but we were both very turned on and glad we had been caught. I've never been caught again.