Possible Clues:

• You must restrict extremes of ebullience - only a snigger!
• What a giggle to get ready to drive him!
• It's a giggle to drive off with a man, by the sound of it
• What a giggle to drive from there to him, by the sound of it!
• Giggle sound (2 words)
• Drive him off, by the sound of it, just for a giggle
• After tea he sounds amused
• After a drink, man's heard to giggle
• What a giggle so to drive a man from here!
• [Giggle]