Possible Clues:

• The use of exaggeration for effect
• Deliberate exaggeration
• That sound exaggeratedly high through the tree trunk
• 'I could eat a horse,' e.g.
• Hi! That sounds as if it's through the tree-trunk to an exaggerated extent
• Exaggerated claims could give Beryl hope
• Curve finally altered: that's not to be taken literally
• Deliberate exaggeration used for effect
• Deliberately extravagant exaggeration
• Help boy rambling to restrict hesitation and exaggeration