RB as it is at this time
RB means random boner
it means that user added you to their snapchat friends list
it means right back..
it stands for rubidium.
snapchat
snapchat
It appears that means the number of views is 429 million.
No, Snapchat is not available on the Nintendo 3DS
If you mean RB, then it is Regulus Black.
It is not possible to turn of your Snapchat score with the current version of Snapchat.
It means that the person on snap chat added you