A fork of Rural Dictionary
When you reply to a answer or statement by simply saying 'why' When you get your second answer, you'll just answer 'why' again, and so on. Put simply; a good way to annoy someone.
"You know what? I'm going to get the teacher annoyed with a why train." -- "So, Why is school cancelled this friday?" "It's because we need to do Professional development." "Why?" "Because teachers need to learn as well." "Why?" "Because we don't know everything." "But Why?"