Related Clues:

• Ready to go, already
• Squirming, perhaps
• On pins/needles
• Hardly settled
• Likely to fidget
• Like many a Type A
• Itching to leave, say
• Having the jitters
• Eager to leave the picnic?
• Constantly shifting
• Very nervous
• Unalterable
• Short on forbearance
• Unable to hold still
• Overeager