“By the way”: idiom meaning.

By the way
You say “by the way” if you are speaking about something and then you want to change the topic and start speaking about something else or just mention something which is not related. A typical situation is when you are having a conversation with someone and suddenly you remember something you wanted to tell/ask that person, but something which is not related to the previous conversation. In this case you say “by the way” and start the new topic.

Other examples of “by the way” idiom in a sentence

  • Yes, it must be terrible. Oh, by the way, I forgot to tell you, Kate is getting married!
  • You look good in this new dress, by the way.
  • Oh, by the way, have you heard the news?

“By the way”: use in context explanation

The two guys see a beautiful girl and would like to chat her up. They have to make an excuse to start talking to her. One of them comes up with an idea. He pretends he is looking for a bank and can’t find it (which is not true) and asks the girl for directions and by the way, he also asks her to give him her phone number.