Possible Clues:

• Fail to impress, being loud and completely out of tune
• Completely fail to be strong, everyone lacking fizz
• Don't drop round — it will produce no response
• Get no laughs, as a joke
• Everyone in female accommodation gets to flounder
• Don't stand round showing what a bad crack will do
• Autumn accommodation to prove ineffective
• Fail completely and have no effect
• Fail completely to produce the intended effect
• Fail to impress in dive that's out of fizz