Possible Clues:

• The first thing that comes out of one's mouth in a manner of speaking? Everyone says that!
• Native language
• Abroad the gourmet gorges on local variety of yak?
• Heard from the beginning, the babes out there understand that lingo!
• Gucci, Gucci, Gucci - sounds like something Mum said? All the babes out there understand that lingo!
• The Irish or the English hereabouts, in a manner of speaking?
• Ah, look at the little baba! That sounds very Irish, for one
• Portuguese, for Brazilians, e.g.
• Language used making fuss over meat?
• Frenchman with strange language - but it's his own!