In fact, part of Japanese pop music lyric is often written by English.
In another instance, Japanese people wear T-shirts printed English rather than Japanese.
For befog mean or image of the word?
But, Arabic,Chinese,French,or another languages are not used.
There is particular reason in English for Japanese people, I think.
In my opinion, this is a reflection of images which are given by media.
We the Japanese make an image of people speak English through TV or movies.
In those contents, especially in fictions, people are always described as super star or something.
In other words, is a Japanese language image made through Japanese contents like Anime?