Related Clues:

• Angry horse noise
• Hunt for truffles
• [Humph!]
• [That's disappointing news]
• Express disdain (at)
• Sound from a sty
• Nonverbal 'Yeah, right!'
• Wordless 'Yeah, right!'
• Derisive reaction
• Bar drink taken in one gulp
• Embarrassing laugh accompanier
• Horse noise
• Sound from the bullpen
• Sound that's bullish
• What a bull does