Moving as fast as you possibly can, usually used to describe a medical helicopter flying as fast as they possibly can in order to save a life.
*sound of helicopter overhead*
“Hey? What’s that sound?”
*listening*
“That’s the sound of Metro Life Flight flat ass bookin!”
“Hey? What’s that sound?”
*listening*
“That’s the sound of Metro Life Flight flat ass bookin!”
by trparky February 16, 2021

A flat tire describes a person, a woman specifically, who is hard or draining to talk to, and has a small or flat chest. Hence forth, a flat tire.
"I was talking with her, and let me tell you, she is such a flat tire." "Mark! Don't talk about someone like that!"
by Ronlad Reneag November 27, 2024

by Roberto the great March 2, 2024

Adjective:
Feigning importance and fraudulently or deceptively claiming to be busy at work when in reality you have sweet FA work to get done.
Synonym: Pretending to be busy at work when you actually are not.
Feigning importance and fraudulently or deceptively claiming to be busy at work when in reality you have sweet FA work to get done.
Synonym: Pretending to be busy at work when you actually are not.
"How are you going today?" "Oh, I'm absolutely FLAT CHAT!" (Sigh dramatically and flutter hand over chest)
by Cactus Juice February 22, 2018

Someone who doesn’t even have two brain cells. They lack a brain to store said cells in the first place.
by Pialinist May 2, 2023

an old school slang term for the bologna sandwich that is served to guests at the Chicago Police Dept lockups.
Oh, man, my old lady couldn't bail me out, so I had to stay in the lockup and have a Michigan flat steak for dinner.
by Dinosaur of EMS September 13, 2017
