1 definition by Eikinkloster

You use it when your friend is expressing skepticism towards some fact you've just told them, to hint that it's common knowledge and your friend is making a fool of himself by insisting to doubt it.
- "WTF" is an interjection.
- Really? I never heard of it.
- Now you know.
by Eikinkloster May 3, 2011
Get the Now you know mug.