LORELAI: Hey, I’m gonna find a ladies room. You know, sneak a smoke, see if anybody slipped an aspirin in my Coke.
RORY: Okay, Rizzo.
Betty Rizzo (played by Stockard Channing), usually known by her surname only, is a character in the 1978 musical film Grease, previously discussed; she is one of the Pink Ladies clique at Rydell High School. Tough, cynical, and sexually experienced, Rizzo is at first antagonistic towards the “good girl” heroine, Sandy (Olivia Newton-John).
In the film, Rizzo, like all the Pink Ladies, smokes cigarettes on the sly. Her friend Marty Maraschino (Dinah Manoff), the best-looking of the Pink Ladies, complained at a teenager’s dance that the flirtatious adult host had tried to slip an aspirin into her Coke – according to an urban legend of the era, such a combination could be used as a date-rape drug.
The Annotated Gilmore Girls 