The AC/DC song "TNT" begins with a chant I did not understand until I was in my thirties. I always thought they were saying "Oy oy oy oy . . . ." I later figured out they were saying "Hey," with Australian accents.
Sarah's fallen into the same mistake, though her first guess was closer than mine was. When she sings it, she sings, "Hat hat hat hat . . . ."
She keeps asking me to put the "rock and roll" on television. That's my girl!