I would consider myself a mid-size Shakespeare fan — I've read a lot of his works, both the popular (like Romeo & Juliet) and the hidden gems (The Merchant of Venice).
HOWEVER, even as a casual connoisseur of the Bard, I'm still shocked by how many phrases from Shakespeare are still used in everyday vernacular.
So, here are some common, everyday phrases that you may or may not know hail from Shakespeare: