Related Clues:

• Ultimatum retort
• Certainly not close to autumn, the night before last in summer
• Without any chance
• When pigs fly in one vertically
• Definitive denial
• Succinct version of the combined final words of the starred answers
• Adamant refusal
• "___ Mind the Bollocks, Here's the Sex Pistols"
• Specialised skill, from what we hear? Absolutely not!
• Not a single time
• "Not happenin'"
• Corey Hart hit "___ Surrender"
• "Ain't happenin'!"
• When to look a gift horse in the mouth
• When the sun rises in the west