RRB stands for the Random Raging Boners experienced by teenage boys. Often at bad times, such as in the halls at school or in classes.
Luke: "Dude I had the WORST RRB today in gym!"
Chuck: "Yeah I know dude, it's impolite to point!"
RRB means Real Raw Bitch that just means that u are a real honest ass bitch no fake shit no nun of that. U are a boss and baddie and u know ur worth !!!!
“Hey what does RRB mean?”
“it means Real Raw Bitch”
“Ohhh got it!”