Related Clues:

• Overstrung
• Experiencing jitters
• Opposite of relaxed
• All keyed up
• Having the jitters, perhaps
• Itching
• Prone to fidgeting
• Anxiously impatient
• Like some performance art
• Nervously impatient
• About to snap
• Pushing the envelope
• Like a bundle of nerves
• Innovative and daring
• Out there, in pop culture