Smartn’t 

Not smart. A conjunction of “smart” and “not”

John: Ben is stupid.
Max: So he’s smartn’t.

John: What?

Smartn’t by Vatsug777 January 30, 2022

ur smartn't 

to tell someone that someone is dumb

ur smartn't
you mean dumb?
no, smartn't
what

ur smartn't by owotsu November 9, 2020

Smortn't 

The action of being stupid...but faster and is a way to insult someone "nicely". People can use this freely. Also for smart a$$ people this term is used frequently. This works on dumb people and they will think you're joking around with your pronunciation of smart.

Smortn't is often used when you are describing (roasting) someone.

Smortn't by Commander Smortn't October 31, 2020

smarn't 

A sneaky way of calling someone stupid

"So lemme demonstrate, I found a better way to tie my shoes, first you make a knot, and then you make a knot, and then you make a knot, and then you make a knot, and then you make a knot, and then you make a knot, and then you make a knot, and then you make a knot, aren't I a genius?".

"Yeah that's pretty smarn't man, nice,"

"Thanks man!"

smarn't by Tony_Pepporoni February 18, 2024

Shartn't

When you gamble on a fart, assume that you've lost the gamble but in fact won

I thought I needed new shorts but I shartn't

Shartn't by ZeilViridis August 16, 2025

REAL SMART CAN'T 

Aspirations thwarted by classification from the REAL SMART CANT.

I admit so badly I want to teach but for some reason REAL SMART CANT does not accept REAL SMART CAN'T PEDOPHILE.

REAL SMART CAN'T by NOTHING BUTT BPM August 20, 2021

T.S.D. (Too smart Disease) 

Caused by overworking the Central nervous system of the brain. Eventually certain parts of the body start to shut down, usually starting with the left foot and working its way up the body. Although T.S.D. is very rare, there have been 37 recorded deaths.

Stephen Hawkings is the most well known person who suffers from T.S.D. (Too smart Disease) Another well know case was Franklin Roosevelt

T.S.D. (Too smart Disease) by The Golden Fish June 30, 2010