This question already has an answer here:
Let's forget how it is used or what it might imply , because why , is why? (?) Regardless am I not correct." Why, thank you" makes little sense to use unless you are asking why someone is thanking you. let's keep it real , I don't think there is another language that uses such , so commonly.It is not correct....it makes no sense. Am i the only one here that feels this way?