An adequately manipulated version of the word 'Retard'. It's use is less derogatory than the standard and is utilized for criticism, hating, and pet names.
The word is also sometimes confused when someone, who carries a speech impediment, says the word 'Retard'--for that usage is more derogatory than 'Rerawr'.
Person #1: You're being extremely rude.
Person #2: Is that so? Well i recognize that you come off as a retard.
Person #1: No you tool, it's pronounced 'RERAWR'.
Using this insult against anyone will immediately crush their soul. They will look down upon themselves and see the shame in their existence, and they will most certainly kill themselves within a 24 hour time period of being called a rerart.