rictus 

overdone pout extreme duck face, often seen on selfies

She tried way too hard, that pout is more of a death rictus

rictus by ElleJezebelle May 30, 2018

Rictus 

A window of time when you are available

Do you have a rictus right now? I'd like to talk to you about something

Rictus by bob_johnson August 1, 2022

Rictus Scale 

Originally a mis-hearing of the earthquake-measuring "Richter Scale", this measures how far your jaw drops when told a surprising or shocking fact. Anything above a Rictus Scale of 7 means you look like Jim Carrey waking from a nightmare.

"When I said we were breaking up, his face measured 7.3 on the Rictus Scale."

Rictus Scale by Where's Mike? March 30, 2009

Coprophagic rictus 

Latin for shit-eating grin!

Please remove that coprophagic rictus from your face when I'm talking to you!

Coprophagic rictus by Doc Latin June 19, 2013

Sticktus Rectus Syndrome 

Genetic disease in which the patient has a massive splintery segment of wood is lodged deep within the anal cavity. Symptoms may include irritability, rapid changes in mood, chronic bitch face and constipation.

After being diagnosed with sticktus rectus syndrome, Lizzy tried to get the huge stick out of her butt to no avail.

Sticktus Rectus Syndrome by Dr. Dixienormus January 11, 2015

skull rectus

Having ur head up
Ur butt

Joey really having skull rectus today

skull rectus by Nannie515 January 26, 2019

Rectus Abdominis 

The Rectus Abdominis is a long flat muscle that runs down the front of the abdomen. It is more commonly known as a six-pack on the body and can be seen in muscly/athletic people.

"WOW!!! your Rectus Abdominis is huge man, how do you get it like that?"
"You mean my six-pack?, just weight lifting"

Rectus Abdominis by monaro_waky August 4, 2006