Waiting patiently
This is without a doubt the most considerate of the group. Instead of pestering their human inside, they chose to wait outside the toilet door. All cats everywhere would benefit greatly from mew if only all cats were as well-mannered as these two!
As a result, we may assume that the cats have harassed their owner before he went in. At least he had the sense to close it! We anticipate that the cats will dash into the bathroom when the door opens.