Lookin-flat

Guy with a small penis so that they have no noticeable bulge when wearing clothes.

Those jeans have him lookin-flat.

He has a cute face but lookin-flat

by Rabidchimichanga January 23, 2020

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 footing

When one uses their foot ontop of a man's tip. A type of feet kink.

He literally started flat footing my dick bro.

by slayhennysx July 19, 2023

aesthetic flat closure

A type of surgery that is done to rebuild the shape of the chest wall after one or both breasts are removed. An aesthetic flat closure may also be done after removal of a breast implant that was used to restore breast shape. During an aesthetic flat closure, extra skin, fat, and other tissue in the breast area are removed. The remaining tissue is then tightened and smoothed out so that the chest wall appears flat.
Search NCI's Dictionary of Cancer Terms

After considering all of my reconstructive options, I decided that I didn't want implants or autologous reconstruction - I chose to get an aesthetic flat closure.

by flat activist April 29, 2022

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

What ur GF is

Bruh, my girl is Flat

by Saucetoe June 17, 2020

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