What is Bomb muttering?

[Stugotts]

All the birds on the initial screen have a characteristic sound, but Bomb sounds like Grandpa sitting down in his easy chair. I hear “Oy yah yah yah… Polenta.”

What do you hear?

Topic

[Rowdypup]

He might just  be yawning, I suppose. I also hear the “Oy yai yay” coming fro his gibberish.