RORY: When are you going to tell them [Richard and Emily, about the engagement]?
LORELAI: Soon.
RORY: When’s “soon”?
LORELAI: When the big hand hits the “S” and the little hand hits the “OON.”
A play on helping small children tell the time by showing them where the hour hand and minute hand on a clock are.
The Annotated Gilmore Girls 