Face full of Lies
A person who lies so much their face is like a broken alarm clock, it’s all wrong and it’s screaming at you.
My friend said he didn't cheat on the test, but his face looked like he was trying to run away.
My mom said she didn't eat the last slice of pizza, but her face was like she just saw a monster.
My brother said he didn't borrow my bike, but his face was like he was about to get caught.