Flat bike

When you have sex with someone and you are flaccid.

Want me to give you a flat bike?

by misty578 January 23, 2016

Flat Tag

To tuck in or lay flat an errant tag on a piece of clothing worn by another.

Bill raised his glass of beer and told his buddies, "It was a good day - I flat tagged Susan at work!"

by Boston Literary April 12, 2016

Mars Flat

A word to describe one of your friend being flat without them knowing.

“Hey have you seen Mike MARS FLAT”
Haha yeah “MARS FLAT”

by Dr Scientist Joy Knea Man April 28, 2021

Flat tire

When a chubby person farts.

chubby person farts Dang! You need me to call roadside assistance?!? Sounds like you just got a flat tire!

by FDubs January 5, 2025

Make Everest flat

Making something very complex very simple

I need you to make Everest flat as a don't understand what your are saying to me

by Ellis911 September 9, 2016

flat

Cool-looking, sexy.

Friend1: See this new car I bought?
Friend2: Yeah bro it looks flat.

by LB16 October 6, 2016

King Simp (a.k.a. Flat Simp)

What you call a man when he weighs 17 pounds and simps on every girl at Holy Cross.

Lucas is a King Simp (a.k.a. Flat Simp).

by HoldItDownForTheTown May 23, 2020