Book excerpt: The original bad boys of the comics page are back in this wildly entertaining seventh collection of Pearls Before Swine comic strips by Stephan Pastis. You know the lineup: Mucho macho Rat, who's ready to get down with anyone he can; sensitive Pig, who can't give up his disco dreams; Zebra, who will survive; and Goat, the brains of the outfit. Violent, unstable Guard Duck and the Crocs next door round out this fabulous cast. The dark, twisted adventures continue as these characters dance the night away.