Rick has started asking Mallory to listen to him when he needs her to do something. He says: “Mallory, you need to listen to Daddy” and she responds “I listen for you Daddy”.
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And this doesn’t have to do with prepositions but it’s another Mallory-ism. She likes to eat dinner at the “res-or-raunt”. I know the pronunciation isn’t that far off from normal but it still kills me when she says it.