Season 7, Episode 5 - "Where's Charlie?"
Before Charlie died, he and Rose agreed on a signal if he wanted to contact her from beyond the grave. What was the signal?
All of the cantaloupe will be on one side of the fruit salad
Rose: Before he died, Charlie and I agreed that if he ever wanted to tell me something from the other side, we'd have a signal. All the cantaloupe would be on one side of the fruit salad. See, Charlie liked to eat each type of fruit separately. He hated it when they were all mixed together.
Blanche: Then, why did you make fruit salad?
Rose: That was an argument we must've had about a million times. But he hated cantaloupe! He said he'd rather be dead than eat cantaloupe.
Dorothy: Hence the signal.
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