flat

Something that is so bad or boring that you can't even watch or do it anymore.

Bro, this soccer game is so flat.

by bartholemule the third April 13, 2022

Flat up

When a bubbly liquid, like soda, goes flat

"I hate buying 2L bottles of coke, they always flat up quickly"

by philcagitz July 29, 2024

Flat

What ur GF is

Bruh, my girl is Flat

by Saucetoe June 17, 2020

Flat Earther

Someone whose mother drank while pregnant, though it is also a possibility that they have suffered a blow to the head, causing mental retardation.

Person 1: Did you know that Jessica is a flat earther?
Person 2: Yeah, her mom should have never had that one sip...

by ranocchio May 5, 2023

Flat Tire

Flat tiring is when a man jerks off another man so many times that he cannot become erect anymore

I just gave Riley a flat tire!

by JinkyMinus February 3, 2025

Puerto Rican flat tire

When someone replies "PSSSSSSSSSH"
To anything said to them.
Basically saying they don't agree making the sound of a flat tire.
Mostly done by Puerto Rican females

Hey you dating that BBC?
Pssssssh (Puerto Rican flat tire) sound

by Puertoricanflattire March 15, 2020

Flat

Naomi Richards

Naomi is flat

by The biggest boomer April 21, 2020