Related Clues:

• More inane
• Less likely to fly?
• Less logical
• Goofier
• More ridiculous
• Dumber than dumb
• More nonsensical
• More batty
• Less likely to catch on
• More asinine
• More bananas
• Are involved with the inn - more fool they
• In 30 across an inclusion that's comparatively silly
• Comparatively stupid
• Twice as dumb