A word that NorCal residents (erroneously) believe SoCal residents say. NorCal residents made it up in order to make up for their insecurity of using the word hella.
NorCal kid: Hey, you're from SoCal, why does everyone hella say grippa down there?
SoCal kid: WTF are you talking about? I have never heard grippa before in my life, and what's up with hella? You sound retarded.
NorCal kid: No! You're retarded!