Related Clues:

• Vegged out
• Just sat there
• Hung around idly
• Dogged it
• Sat at a red light, e.g.
• Waited for the light to turn green
• Was idle, in a way
• Sat at a light
• Kept the engine running
• Just sat around
• Ran in park
• Ran in place
• Did naught
• Just hung around
• Whittled on the porch, say