To say something rude, offensive or otherwise morally/socially objectionable, only to follow it up by taking a drink from a bottle/can of Fanta orangeade. This action renders the previous statement as a simple case of 'Fanta Banter' rather than an offensive statement. People are not allowed to be offended by something if it is Fanta Banter (or Fanta Banta).
Bobby: Hey man, you're a fucking nigger. You're also retarded and fuck ugly and I fucked your dead mother.
Jeff: Hey man, that isn't cool! How could you say such a thing, man?! I-
Bobby: *drinks Fanta*
Jeff: Oh, it's just Fanta Banter. It's cool, man.
Jeff: Hey man, that isn't cool! How could you say such a thing, man?! I-
Bobby: *drinks Fanta*
Jeff: Oh, it's just Fanta Banter. It's cool, man.
by M. Fallon, Banter Minister September 27, 2013