ETA: Let me give y'all some context as to why it has to be specific sounds:
JACK: Ma’am, seriously, I’m begging you. Don’t jump, because I’m gonna have to jump in after you.
ROSE: But—that would kill you.
JACK: See, you’d think so, wouldn’t you? Actually, you’d probably just snap your spine in the fall, and then be left floating in the subfreezing water while vengeful dolphins gnaw your toes.
VENGEFUL DOLPHINS [shaking bloody flippers]: EEEE! EEEEEHEEEH! CLICK CLICK CLICK!
[Vengeful dolphins are from earlier in the parody, it'll make sense when you get there.]