In the episode “Those Are Strings, Pinocchio,” in reference to Love Boat.
LUKE: We’re driving through Western Canada and then taking a cruise up to Alaska.
RORY: A cruise?
LORELAI: Intimate.
LUKE: I guess. Is it?
LORELAI (singing): The Love Boat!
LUKE: What?
LORELAI: A cruise is a good spot to get down on one knee.
LUKE: And do my ventriloquist act?
LORELAI: And propose.
LUKE: I have no plans to propose.
LORELAI: You don’t now, but after you’ve had dinner at Captain Stubing’s table and Isaac’s served you up a couple of mojitos…
The tune that Lorelai sings is from the theme song of The Love Boat:
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