Code 16
A phrase a girl uses for her period
Jenny: I think Jane is moodier than usual
Sally: Yeah, she must be on code 16
Sally: Yeah, she must be on code 16
Code 16
When the naked nipple of a girl is visible from a certain angle and you need to tell it to your fellow men.
"Dude, Code 16 on your right, blonde girl"
"Holy s*** nice."
"Holy s*** nice."