I've heard several times in YMML ATC begging the crew to look out the window and wave off the ground crew who were trying to show the pin. Depending on location ATC can't issue a taxi clearance until the Tug reports clear, the Tug couldn't report clear until the wave off.
The cockpit crew just didn't get it and they sat there for 5 mins until they worked it out.
Obviously they would have happily taxied off without checking the ground crew were clear......luckily YMML local procedures saved the day........now in LAX?
Obviously they don't always look outside......
