Syndrome Mouth 

An unintentional over posed facial expression, expressed in the lips to look sexy while taking pictures, to give a fuller lip effect or more intriguing facial profile on camera. Characterized as the lower lip or general mouth region being over relaxed and droopy, giving the "syndrome mouth" appearance, which ultimately makes them look like a joke.

Director: Give me the "I know you want me" look.
Amateur model: *posing the syndrome lip instead*
Director: Your lips are over relaxed. Look more stern and regain your posture.
Amateur model: *continues to look like a goof*
Director: Gahh you're still giving me that syndrome mouth look!

Syndrome Mouth by Gianna Da Vinci December 19, 2010

small mouth syndrome 

Also known as SMS. The condition manifests itself in adults whose mouths do not grow in proportion to their face as they mature. These individuals have child sized orifices. They can usually be identified using words like "supes" and "totes" which are easier for them to pronounce. See also Taylor Lamontism.

Taylor Lamont's small mouth syndrome was apparent as he made judgy facial expressions at the HRC Gala.

small mouth syndrome by Justcallmejulio12 September 29, 2013

Smash Mouth Syndrome 

A mildly contagious disease that has a person compulsively singing all star just for the sake of memes. People suffering from smash mouth syndrome may also sing It because the can't get over how catchy "all star" is.

1: Why does he keep singing All Star? Isn't everyone tired of that song?
2: He has Smash Mouth Syndrome, just don't acknowledge him in any way.
1: but he's even doing the voic-
2: shhhhhhhhhhhhhh

3: why did you call it smash Mouth Syndrome if that's the only song the-
2: shhhhhhhhhhhhhhhhhhhhhrek

Smash Mouth Syndrome by TheCupIsHalfBowl March 28, 2017

Fish-mouth Syndrome 

A prevalent facial defect found on SJWs and feminists where their mouths are permanently slunk down to the sides of their chin, thus giving the appearance of a retarded fish. These features are often accompanied with the standard privilege checker glasses, a huge honking nose that blows when triggered, and unfitting hair colors.

Doctor: I'm sorry to say that you have developed Fish-mouth Syndrome due to prolonged exposure to Tumblr.

Girl: PATRIARCHY!!!!!!!!!!!!!!!

Fish-mouth Syndrome by IReallyDontLikeYou May 12, 2016

Fish-mouth Syndrome 

Fish-mouth Syndrome is a condition that infects most of the SJW community. You can tell if someone suffers from this just by their upright-triangular-frowning mouth appearance (which also exposes the front incisors). This facial expression gives the infected person a stink face, with subtle hint of mental retardation.

Patients with FMS (abbreviation for Fish-mouth Syndrome) often have attention seeking hair styles/color, wear nonprescription glasses, and have at least one body piercing. They are easily "triggered", which prompts them to uncontrollably defecate from their mouths.

Cure: Common sense and more exposure to the real world.

Barista: Welcome to Starbucks ma'am. How can I help you?

Fish-mouth Syndrome patient: Oh my god! Did you just assume my gender? How dare you?! I refuse to be oppressed by your white cis male privilege. I will boycott all coffee from now on since you offend me so much. RAGE RAGE AGAINST PATRIARCHY! Now if you would stop harassing me, I have a pitcher of male tears to consume. Check your privilege.

Fish-mouth Syndrome by ForFuckSakeMate September 12, 2016

Hush Mouth Syndrome 

when someone get's quiet for a period of time because they don't quite know how to or want to respond to a comment or set of comments in a text or IM conversation. Hush Mouth Syndrome is this followed by a sudden change in topic

Guy: let's go to the movies this weekend
Girl: OK
Guy: what do you want to see
Girl: how about the new Twilight movie
10 Minutes of Hush Mouth Syndrome later
Guy: so how about those sorry azz cowboys

Hush Mouth Syndrome by Blu PainΣ December 3, 2010

Open Mouth Syndrome 

When somebody's jaw always seems to be hanging down, mouth is always involuntarily open, etc. Douchebags, dumbasses and hoodrats make up most of the infected population with Open Mouth Syndrome.

Pat- "That douchebag TJ never closes his mouth. Always looks like he's open for business and deepthroat sessions. Guess he's just retarded."

Jon- "Yeah dude that dumbfuck has Open Mouth Syndrome."

Open Mouth Syndrome by PatNig March 12, 2011