Heh, you dont remember that chinese resturant?
After the dogs come into the house, and eat the christmas ham (or turkey? that doesnt sound right...), and then they have to go to the chinese resturant for christmas dinner.
And while they're there, they have the singers trying to sing that song, and they go:
"Tis the season to be jolly, Ra-Ra-Ra-Ra-Raaa, Ra-Ra, Ra, Ra."
And then the manager comes to them and goes:
"Nooo, you're supposed to say La-La-La, not Ra-Ra-Ra."
And they do it again anyways because they cant help it. Hence, what he was talking about their language and accents.