LORELAI: So tell me about the big rehearsal.
RORY: We got off to a shaky start, and Louise acts like she’s the priest in a Madonna video, but by the end, we were not half bad.
Rory may be thinking of the music video for Madonna’s 1989 song Like a Prayer, from the album of the same name. Much of the video’s action takes place in a church, and although there’s no actual priest, there’s a saint (I believe it’s St. Martin de Porres) in priestly-looking robes.
The Annotated Gilmore Girls 