code 6 Share definition Flag USAF Security Forces radio brevity code to indicate going to the bathroom. Code 6 refers to urinating, while Code 6 Bravo refers to taking a shit. Control: "Security Four what's your status?" Security Four: "Code 6 Bravo" Control: "Copy that. Advise when you are negative. Control Out." code 6 by USAFCOP January 9, 2008 Get the code 6 mug.