Possible Clues:

• "Stay out of my affairs," briefly
• Rebuke to an eavesdropper, for short
• ''Butt out'' initalism
• Advice column's initial advice
• Brief "Don't ask so many questions!"
• Initial warning to an intruder?
• 'Eff off!'
• Initial response to a yenta?
• "Butt out!," initially
• 'Butt out,' for short