Carpe Jugulum (Latin for "seize the throat", cf. Carpe diem) is a comic fantasy novel by Terry Pratchett, the twenty-third in the Discworld series. It was first published in 1998.
In Carpe Jugulum, Terry Pratchett pastiches the traditions of vampire literature, playing with the mythic archetypes and featuring a tongue-in-cheek reversal of 'vampyre' subculture with young vampires who wear bright clothes, drink wine, and stay up until noon. (description taken from Wikipedia)