interestingly enough the Brown Out is an output pin on a Microcontroller chip that indicates when power to the system is failing. e.g. when your TV tells you that the batteries in your remote are low it is because the Brown Out has flagged up a warning and the remote has transmitted that warning signal on to the TV
When engaging in multiple penetration anal sex, a brown out occurs when there are too many dicks in a girl or guys ass and someone realizes that their dick is not making any contact with the ass and is completely surrounded by other dicks.
The gangbang was going really well until someone discovered they were in a brown out, and then it was just really gay.