A family-friendly way of denoting a urine incident or the threat thereof. In other words, someone just peed or needs to badly. It's perhaps most often used by medical professionals, who frequently have to use other codes so code yellow just fits right in.
by Tsovoa July 4, 2019
A code called at Linden Oaks Mental Hospital. It's used when a patient goes completely ape shit and the only thing left to do is to lock them in a room and inject Ativan in their ass.
by Luna Tick February 25, 2012
When a girl or guy stares at another guy or girl who they think is cute for long period of time (stalker like). This is to be used as a warning to warn the person that someone is staring into the very depths of there very soul for 5 hours without taking any breaks. Its is best to avoid a Code Yellow if at all possible to prevent any discomfort! To warn someone of a Code Yellow, just say "Code Yellow" or, for singal purposes, say "Yellow" in sign language.
by ForbiddenProdigy October 26, 2011
by @dango.walker October 21, 2019