Mariah Carey

Mariah Carey has one of the most well-known voices in the world, but even her most diehard fans — or should we say "lambs" — may have a difficult time identifying her signature pipes when she guest-stars on American Dad.

On Sunday's episode (9:30/8:30c, Fox), Carey plays a Texas native named Laura, who invites Stan to join her and her husband's Thanksgiving football tailgate when his own turkey day festivities don't go as planned.

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But will Laura's major grill emergency thwart their plans for a delicious meal? Not if Stan can help it! Watch this exclusive sneak peek to hear Carey's Southern twang:

American Dad airs Sundays at 9:30/8:30c on Fox. What do you think of Carey's accent?