All of the Angry Birds games (there are many) are different and
each game has several different criteria in terms of the mood or
direness of the challenge which the birds conform their grammar to
accommodate. It seems there are many words in the nemesis swine
vocabulary, and I'll be damned if I know how they do it, but the
designers managed some pretty crafty audio work in a few of these
Angry Birds "worlds". If you are a habitual AB player, you'll no
doubt find these puzzles and when you do, just remember you're not
going crazy, and yes, they DID just say that.