When there s a knock on the door, you re never going to say please come in. Tips on the toilet? Brai

The answer is: when you go to the toilet".

Explanation and analysis: When others knock on the door, it is polite to say that please come in, but when you go to the toilet, because the convenient location of the toilet is limited, and the second is a privacy issue, so when others knock on the door, you can't say please come in, and you can reply to the person who knocks on the door outside, "Please wait".

The general expressions for toilets in English are:

1. restroom, bathroom, this is a common saying in Americans;

2. Lavatory, the British like to use it, and the Americans call the toilet on the train or plane lavatory;

3. This is an abbreviation of water closet, which originally meant washroom, which is no longer used in Western countries and widely used in China for convenience.

When you go to the toilet or take a bath, someone knocks on the door and won't say please come in.

Going to the toilet is also an answer, and there are two more please refer to:

It's knocking on someone else's door.

I'm also outside the door.