The origin of fried rice in sexual relations

A man and his wife are going to be apart for a while.

Agree with each other when leaving, and you can find the opposite sex to solve your physical problems.

But always put a grain of rice in the bottle to count.

The husband came back and gave his wife a bottle with three grains of rice in it.

The wife took out the bottle and the husband was overjoyed to see that it was empty.

At this time, the nanny at home brought out a bowl of fried rice and said to the host, you haven't eaten yet, and there is no rice at home. I saw some in this bottle and copied the rice for you first. . . .

Therefore, the metaphor of fried rice is called XX.