Yet another way you might intimate this is to make two thumbs-up signs, hold them in front of your eyes with your left thumb pointing to the left, and your right thumb to the right, and to touch the "meaty" parts of your hands together twice. This action looks almost as if you are crushing something between your fists or pulling a string grasped in your two hands. The gesture might also indicate to the other person that it's time to leave the noisy environment altogether, e.g., the 25-cent drink special in your favorite bar is over, and you're all out of quarters.

This piece of sign language originates from airfields, wherein the pilot of a small craft would use this gesture to communicate with the crew on the ground, since the crew obviously can't hear the pilot speak. With that gesture, the crew knew it's time to pull the chocks from the landing gear wheels so that the pilot can take off.