Code Barry White
A Facebook status (but it could also be used on other social networking sites) which is short for "I'm having sex or am about to have sex so don't bother me until further notice." This is often used when you have no idea where your roommate is or simply don't want other people like friends or suitemates to bother you. This is sometimes shortened to just "Code White" but Barry White was chosen because he is rumored to be able to sing any song and make it sound sexual.
Just got back to my place, awesome night on frat row. Code Barry White.