A brown pow is when you are having intercourse with a woman doggy-style, and pull out just before you climax, only to enter her anally and complete the climax. You may have to hold on tight, because shewill not be prepared for it.
We were doing it hard, and right at the end I felt inspired and pulled a brown pow.
See bait and switch, dirty sanchez, anal, butt, sex, butt sex, cum