Possible Clues:

• Grow nervous
• Receive notice of termination and become agitated
• Become scared and burp babies?
• Understand leg-pull about article may make one feel anxious
• Become worried, as parent with flatulent baby must
• Become nervous or apprehensive
• Understand leg-pull about article makes one feel anxious
• Become anxious and burp?
• Understand one's being teased, and become nervous
• Become frightened