The answer is a washlet.

It is a special toilet seat with special functions.

You touch a button and water spouted like a shower from inside the toilet bowl and washes your bottom.

It also keeps the toilet seat warm.

Why do Japanese people use the washlet?

Originally it was introduced as a medical tool at hospital or welfare facility.

Second, Japanese people are particular about being clean.

Third, Japanese people are luxurious in everything.

In the past, Japanese people did not accept a washlet, because it may have been a strange pungency.

In the past, when you touch a button by mistake, water spouted and a toilet was flooded, but now a sensor was installed and water couldn’t spout without sitting on it.

Warming toilet seat relaxes us.

Why isn’t the washlet accepted abroad?

However Madonna, who is famous singer, liked the washlet.

Compared with that used in foreign countries, Japan generally uses cleaner water.

A washlet wastes power.

So, one can argue that the washlet could accelerate global warming.