Firmo 

The act of firming of ones anus, during anal intercourse, (i.e. Flexing your ass muscles).To make the experience more pleasurable by all male partners involved!!

Punisher was at the local bar, picking up on this hunk named Dan.After several drinks, Punisher decided to Firmo Dan

Firmo by Kobra1josh July 14, 2005

Tidy Firm 

When two groups of pals come together to make an even better group of mates! making it a Tidy Firm. The Tidy Firm first originated in 2010 from two firms on Canvey Island. The Dark Island Firm and the Diablos. When these two firms collide to make one it makes an extremely Tidy Firm.

I hear the Tidy Firm are hitting Magaz this year?

Tidy Firm by yeeehhhhh rrrooooyyyyy March 11, 2011

Firm it

To take something that is hard to bear.

She just told me she's not interested.

- Mate you have to firm it.
- Mate gotta firm that shit.
- Firm it son.

Firm it by MrYeung January 24, 2014

firmly toasted 

To Smoke weed to the point where your soo high, You start saying random ish, or just sit there staring into space.

"The twins and I went over to Marks house and got firmly toasted on the couch."

firmly toasted by Dblack Saturn February 3, 2015

Firdous 

Firdous, is the name of one of the Paradise(JANNAT), according to Muslim belief

Jannatul Firdous

Firdous by fida February 2, 2013

firm it up 

To take something that is hard to manage and complete the task

Benjamin - "This maths work is so hard fam"
Tyrese - "Firm it up"

firm it up by savvyfromnrth October 27, 2018

Firhouse 

A girl that is so stupid, dumb and cringy, and always talks about Shawn Mendes and shit like that

Guy #1: Wow, that girl is so dumb and cringy.
Guy #2: I know right, she must be a Firhouse

Firhouse by RoseAndDagger28 October 14, 2018