Flat Stack

1. Someone who made one thing they enjoy their entire personality

2. Someone with nothing really unique or outstanding about them.
3. This is another form of `basic`.

Did you see that girl over there?

Yeah she is nothing but a flat stack

by Deepandhard December 4, 2022

Flat pedals

The type of pedal used by inferior cyclists that think there cool but in reality are much slower and are afraid of being attached to their bike because they suck

"Flat pedals win medals"
"make sure you never ask me to ride with you again"

by Supreme Boi February 6, 2017

flat earther

Someone thats is stupid and is surviving on one singular braincell,preferably a boomer or someone that dropped out of school and failed every single science test.

That dude standing over there is a flat earther,take out your guns,henry,wake him up

by anonymous August 2, 2022

Ikea Flat

The instance when a person who doesn't mean to be a dick becomes a bonafide dick.

You're acting like an ikea flat.

by specialtiesguru March 25, 2013

Flat Milk

When the milk has been left out of the fridge for a prolonged period of time, so the milk is no longer cold and crisp.

"Can you put the milk back in the fridge, it's gone flat"

"Flat Milk is the worst"

by YaMother'sGash August 29, 2016

Flat Fart

A fart that is at the same level of noice the whole time

That dog just had a flat fart

by Iggy star September 13, 2017

Flat Spurt

When you cum on a girls chest who is has small breasts

Dave: I so flat spurted on my missus last night!
Jim: Hot yo!

by ChorleyFM July 21, 2010