Related Clues:

• Laugh slyly
• Sly, stifled laugh
• Stifled giggle
• Pig noise
• Laugh
• "Oink" kin
• Show of incredulity
• Emulate Johnny Depp in 'Blow'
• Flirty giggle
• Relative of a harrumph
• Audible expression of contempt
• Bullish comment
• Reproachful sound
• Flirtatious laugh
• Snigger at bird with temperature in hospital