WATCH: Sneak Peek of all-new AMERICAN DAD - "Finger Lenting Good"

AMERICAN DAD: After the Smiths promise to give up their various vices, they all get drunk at Roger's Mardi Gras party and enter into a harrowing pact with Bullock that allows him to cut off the finger of the first person who cheats in the all-new "Finger Lenting Good" episode of AMERICAN DAD airing Sunday, Jan. 6 (9:30-10:00 PM) on FOX 50. AMERICAN DAD ™ and © 2012 TCFFC ALL RIGHTS RESERVED.

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By FOX50.com

Story Created: Jan 4, 2013 at 11:47 AM EDT

Story Updated: Jan 4, 2013 at 11:47 AM EDT

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Francine encourages the family to give up their various vices, but they all get drunk at Roger’s Mardi Gras party and enter into a harrowing pact with Bullock. Meanwhile, a pastie is left in the attic, Cinderella-style, and Roger sets out to find the “perfect bosom” on which to place it in the all-new “Finger Lenting Good” episode of AMERICAN DAD airing Sunday, Jan. 6 (9:30-10:00 PM) on FOX 50. (DAD-707) (TV-14 D, L, V)

Voice Cast: Seth MacFarlane as Stan Smith and Roger the Alien; Wendy Schaal as Francine Smith; Rachael MacFarlane as Hayley; Scott Grimes as Steve; Dee Bradley Baker as Klaus; Jeff Fischer as Jeff

Guest Voice Cast: Rhea Perlman, Kathy Griffin, Alyson Hanigan, Chris Diamantopou