Examples:

• Don't be such a Nervous Nellie.
• He's a real Nervous Nellie when it comes to public speaking.
• She's a Nervous Nellie about flying.
• My mom is a Nervous Nellie about me driving.
• He's a bit of a Nervous Nellie when it comes to job interviews.
• Don't be a Nervous Nellie. Everything will be fine.
• She's a Nervous Nellie about spiders.
• He's such a Nervous Nellie. He worries about everything.
• Don't be a Nervous Nellie. It's just a harmless snake.
• She's a Nervous Nellie about heights.
• He's a Nervous Nellie when it comes to thunderstorms.
• Don't be a Nervous Nellie. It's just a little mouse.
• She's a Nervous Nellie about getting lost.
• He's a Nervous Nellie when it comes to public transportation.
• Don't be a Nervous Nellie. It's just a harmless bug.
• She's a Nervous Nellie about speaking in front of a group.
• He's a Nervous Nellie when it comes to roller coasters.
• Don't be a Nervous Nellie. It's just a friendly dog.
• She's a Nervous Nellie about giving presentations.
• He's a Nervous Nellie when it comes to water.