Neocortex Smile

When the brain tells the mouth to arrange itself in smile position but forgets to tell the rest of the face (eyes, temples etc.) to do the same. Sometimes revealing the lower teeth, it is often menacing and always insincere.
When her ex-boyfriend unexpectedly showed up at the party, she put on a brave, neocortex smile but her eyes revealed her inner distress.

"Have a nice day" the receptionist said for the 30th time that day through her plastic, neocortex smile.
by AYYFRON January 26, 2011
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disco smile

The Disco Smile occurs when someone cranks the BASS and TREBLE way up on their stereo system's equalizer, leaving the mid range very low. On a graphic equalizer, this curve will look like a mouth smiling.

You have now achieved the disco smile. Good job, I hope you didn't *really* want to hear everything that song had to offer.
Lauren: Hey Chris, turn on your car stereo!

Chris: Okay! *click*

Lauren: ARG! Why are my ears bleeding, and I still can't even tell what song it is? Oh, that's right, you're a fan of the disco smile.

Chris: Guilty as charged.
by Kikipopo September 9, 2013
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Smile Addict

Being addicted to anything and everything having to do with smiley faces. The person is usually very happy and has a positive attitude. Someone who can't live without smiles in their life and makes it a mission to spread smiles to everyone they can! :)
Sara is such a smile addict- she always puts me in a good mood.
by SmileyAddict November 27, 2010
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Ragu Smile

The act of performing oral sex on a female partner during their menstrual cycle and then smiling afterward
I gave my boyfriend a ragu smile

Yo man, my girl was on her period, I ate her out, and she gave me a damn ragu smile
by CaptainCornelius December 10, 2015
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the T smile

A smile of joy that happens when a person accelerates in a Tesla car.
Jerry's and his family's first time accelerating in a Tesla model plaid made him and his family have the T smile.
by EV.love October 17, 2021
mugGet the the T smilemug.

Paracetamol smile

It refers to a person that is not truly feeling the pain behind it all.

OR

A lyric in a Declan McKenna song.
Person 1: She has a Paracetamol smile.

Person 2: So tell me what's on your mind, and don't forget your Paracetamol smile.
by tupacbiggybiggy April 17, 2019
mugGet the Paracetamol smilemug.

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