We all know someone who doesn't have a filter. They say what they're thinking or what they're feeling as soon as they think or feel it. I consider myself to have a pretty good filter-- at least I consider my mouth to have a pretty good filter. As for my face? Well, there's no controlling that. When you're as overly expressive as I am, you quickly learn that your face doesn't have a filter. Not sure if your face doesn't have a filter? Here are 12 signs that could prove it doesn't:

1. Unintentional eye rolls.

You're involved in a situation or conversation and suddenly someone says "I saw that eye roll." You look at them shocked. You swear to them you didn't even feel your eyes move, but they did. Your own eyes betrayed you.

2. You can very rarely lie about liking a food or drink.

As much as we would like to say we enjoy whatever we're trying, our scrunched up face has already given us away. We'll keep chewing or sipping, though, if that means anything.

3. Professors love to call on you.

When you're in a small class, there's no hiding your facial expressions from your professor. One twist of the lips or quirk of the eyebrows and suddenly you hear "What do you think, y/n?"

4. Your face is an open book.

I know that this may sound like an obvious one, but it's true. If you're having a bad day or something's bothering you, those who know you well will know as soon as you look at them.

5. It's obvious when you're having a conversation with yourself in your head.

With every thought you have, there's a super obvious expression attached to it. You probably look a bit silly to others, but whatever. If anyone asks, just tell them you're exercising your face muscles.

6. Your glares are lethal...

You may not use them often, but when you whip them out, your message is pretty clear. You're pissed.

7. But your super excited faces make up for them.

Your glares may be scary, but your happy faces are super animated and fun! It's like your face is the life of the party.

8. If you watch "The Office," you probably relate to Jim Halpert the most.

Jim isn't shy when it comes to throwing looks at the camera. You can always tell how he feels about a situation just by the expression on his face. We feel you, Jim. If only we had cameras to look into as well.

9. You purposely substitute your words with facial expressions.

You hear what someone is saying to you loud and clear, but sometimes it feels best to just throw them a facial expression rather than actually saying something. If they know you well, I'm sure they'll figure it out.

10. Schooling your face can be hard.

Number 9 clearly shows that we are very aware of how expressive we can be. When we know we can't let our face give us away in specific situations, you can guarantee every muscle in our face is straining. To be honest, we probably come across looking constipated.

11. Ridiculous Snapchat filters have nothing on the faces you can pull.

Seriously. They should just hire us to inspire them.

12. You've probably said, "This is just my face."

Most of the time, it's a lot easier to say this rather than telling someone what you're really thinking. Especially when you're hanging around someone new. I mean, you're not technically wrong when you say that. It is your face. It's just...your face expressing one of the many looks that you can't help but make.