When a time machine sends Brian and Stewie on two different paths to Vegas, on gets lucky and one does not on Family Guy. "Road to Vegas; No Country for Old Men" is the finale of the show's 11th season.
Stewie: Hey, you have a tattoo. Brian: No I don't. Stewie: Is that Ziggy? Is that a Ziggy tattoo Brian: Aw, geez. Stewie: Why do you have a Ziggy tattoo Brian: I just to used think he was kind of funny. We should get to the hospital.