You Suck by Christopher Moore

You Suck is a sequel to the 1996 comic vampire novel, Bloodsucking Fiends and features many of the same protagonists. However, since Jody turned Thomas C. Flood at the end of Bloodsucking Fiends, it is now necessary for them to find a new minion (daylight gofer.)

Abby Normal, the goth-chick teen girl chosen by Tommy (who styles himself The Vampyre Flood to Abby) is a terrifically funny addition to the story. Her diary makes for some side-splitting reading. The Animals (Tommy's grocery-stocking, turkey-bowling pals from the supermarket) have returned from Las Vegas with a blue-dyed hooker who has somehow earned several hundred thousand dollars over the weekend. Add an alcohol-preserved panhandler with an enormous, shaved cat and a sprinkling of European Undead, and you've got another zippy, funny, and undeniably Christopher Moore-ish read.