Possible Clues:

• Having lost my head I would become not 5 down
• Right out of the cooler, thief's beginning to show unease
• Dog dropped tail to receive fuss
• Make small restless movements
• Have ants in one's pants
• A restless person
• One cannot sit still and do this
• Act nervously
• Fret over some scattered light, eg, diffraction
• Show unease, maybe