[They ring the doorbell, Sookie answers]
SOOKIE: There they are, my little termite whisperers.
Sookie references the 1998 drama film The Horse Whisperer, based on the 1995 novel of the same name by Nicholas Evans. The film is directed by Robert Redford, who also stars in the title role, and is about a “horse whisperer” who is able to train horses through kind, gentle methods.
The Horse Whisperer was a commercial success and well received. It led to anyone having a supposedly ability to handle a difficult creature, person, or situation as a “[whatever] whisperer”, just the way Sookie does. Even though Lorelai and Rory haven’t handled them well at all!
Note that the horse whisperer in the film is a horse trainer from Montana. This is so suspiciously like Bootsy’s claim in the previous episode that he spent a summer training horses in Montana that I think he either chose his vacation after watching the film, or simply made the story up, inspired by the film.