shit my bricks

A phrase to describe something that makes you so livid that you can't compose coherent thoughts, something astounding. Another way to say "are you FUCKING kidding me?!"

Example:

Person A: "I got hit in the face with a snowball and now my parents are suing the school."
Person B: "That's absurd! Are you shitting my bricks?!?" OR "seriously? Don't shit my bricks."