FOSS 

Abbreviation for "Full of Stupid Shit".

That software is FOSS.

FOSS by munkeefonix November 14, 2017

foss 

A word used for a gay person that acts extra gay

Dude 1: You coming to Max's party??

Dude 2: Of course

Dude 1: Okay dress up

*Next day*

*Max opens the door sees guy sitting in with legs crossed guy bites his lips and tells max to come over*

Max: OMG ITS A FOSS!

*Max runs in the house*

foss by >;3_Yur_Wrst_Nightmare_>;D March 2, 2010

FOSS 

Acronym for Full of Shit Southerner. Used to describe a person from the South (including but not limited to the following states: NC, SC, GA, TN, AL, MS, LA, VA and KY) who is politely being evasive, untruthful, disingenuous and/or passive aggressive. A common behavior found in regional southern culture and widely deemed unacceptable to a northerner, who typically values being forthright. For example, the acronym is applicable when someone is 'yessing' you to death and truly means 'no'.

"That person was a FOSS. She kept saying she's love to buy a timeshare from me, and when I asked her for her credit card, she made all sorts of excuses."

"Total FOSS's. They're from North Carolina."

FOSS by TSnyc September 6, 2014

FOSS 

Full Of Sh!t Syndrome

My friend told me he’d been working out during the summer, however, I knew he suffered from FOSS. So, I felt bad for him honestly

FOSS by Mr. Vivi April 8, 2020

Foss'd

Happens when you are fired from a job because of someone you hired is replacing you. This occurs when you get a friend hired at your job, but then your superiors soon realize that the friend can do a better job than you can.

Troy was Foss'd from work because the guy he hired can easily replace him.

I got Foss'd from work today cause I hired Daniel and my company realized he is better than me.

Foss'd by GoIrish7 August 14, 2011

foss titty 

This is what locals of the legendary Bay area town of Foster City call their city.

Let's all grab our windsurfs and cruise down the lake down "Foss Titty"!!!

foss titty by Rosten Boles June 19, 2018

FOSS party 

acronym for French Orange Shake Shake party. the best party ever at the U of I.

- Hey dude, are you going to this FOSS party on Friday before leaving CU forever?
- Hell yeah I'm going! There's gonna be some real shake shake that night!!

FOSS party by French Toast Master March 30, 2009