Well, Frodo is described by Gandalf as "a stout little fellow with red cheeks," but he wasn't stout by the time he got to Rivendell, and he'd have been pretty darned thin by the time he reached Mordor. 
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"Sit by the firelight's glow; tell us an old tale we know. Tell of adventures strange and rare; never to change, ever to share! Stories we tell will cast their spell, now and for always."
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