When it comes to Pretty Little Liars, you can be sure of a couple things. One, you're going to spend a lot of time trying to figure out who "A" is. Two, you're going to spend the rest of your time being terrified. And yet, in spite of the heavy subject matter of the show, we like to have fun sometimes, too! We've already shared a huge bunch of our favorite facial expressions ever, but today, it's all about the sass. Keep scrolling as we pick out the absolute sassiest moments in the show's history. Source: ABC Family
This one only makes the list because you know Mona's got a screw loose. It makes this smile that much more sinister. Source: ABC Family
We can't even tell what's sassier, removing the glasses or the expression that says, "Let's do this." Source: ABC Family
Followed by a face that's like, "Can't even deal with you right now." Source: ABC Family
That face says, "I'm not even going to dignify that with a response." Source: ABC Family
She doesn't even have time to tell you how wrong you are. Source: ABC Family
It's fun when you can pinpoint the moment someone just gives up. Source: ABC Family
It's almost the exact face Regina George makes when you tell her to try Sears. Source: ABC Family
You don't even need a caption or audio to know she is serving up major sass. Source: ABC Family
The moment right before Alison shuts anyone and everyone down. Source: ABC Family
Again, you don't even need to hear her to know she's being so real right now. Source: ABC Family
It's hard to execute a hair flip while simultaneously being like, "Can you literally not?" Source: ABC Family
Look at it. It's like the definition of sassy. We just got a lethal dose of sass. Source: ABC Family
Allow us to present this with the necessary caption context: "Hahaha no." Source: ABC Family
This move takes a lot of practice and savvy. It's like a triple threat. Source: ABC Family
An eye roll followed by a drinking declaration? We obviously have a winner. Source: ABC Family