What is the meaning of “my mouth was lined with sheepskin” mean? Could it mean that the mouth was dry? What is it to do with sheepskin? Thank you ? - Question

Definition of “my mouth was lined with sheepskin” mean? Could it mean that the mouth was dry? What is it to do with sheepskin? Thank you
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What is the meaning of “my mouth was lined with sheepskin” mean? Could it mean that the mouth was dry? What is it to do with sheepskin? Thank you ? - Question