Possible Clues:

• '___ Isn't So' (Hall & Oates hit)
• 'Tell me!'
• 'You can tell me'
• "___ with flowers"
• Half a phrase warning not to spit when you talk
• 'Don't mince words!'
• Darer's phrase
• ' isn't so!'
• 'Don't hold back!'
• 'Speak up!'