Holly: " *faaaaaart* Oooops!"
Hazel: "Not cool, man. Not cool."

Fiver had the vision "Where the wind carries every whisper".
In Holly's case, it should've been "Where the wind drowns every whisper".
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Hazel (smells Holly's breath): "Holly, were you eating onions on Nuthanger Farm?"
Holly: "Of course not. I'm Owsla! *faaart* Maybe one or two *fart* ...dozen"
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Holly becomes the new popstar in Watership Down. But instead of singing his own songs (Frith forbid!), he's covering Roxette - with a new text, fitting to his shape:
"Listen to your fart" 