fosl

fosl= Falling off seat laughing

That prank was so hilarious! FOSL

by LoopyLou April 27, 2008

fosinority

The use of creative engineering for no practical purpose

It took lots of fosinority to drive that car with out a steering wheel or brakes.

by Chance Kiefer Payton April 27, 2008

Fossil Boy

A young man, boy or student with an unhealthy interest in fossils, paleontology, or geology in general.

Fossil Boy is out digging for rocks again

by uncle_fester June 9, 2009

Fosholo

Combining Fosho (for sure) and YOLO (You Only Live Once), it is a word of agreement but with a strongly positive connotation.

A: I'm gonna buy an 8 ball for you and me tonight, and you don't have to contribute any money for it, is that cool?
B: Fosholo

A: Do you wanna have sex with my really hot girlfriend with no repercussions whatsoever?
B: Fosholo.

by foshololo April 4, 2013

foshead

Some fat swell head who can also be referred to as a spenge

Oi what u doing you fucking foshead!

by NONEgamer December 5, 2016

foshed

When someone with a group of friends(typically online) says, "hey I'll be right back." But doesn't return. Later returning as if never leaving at all.
The term is used because the role played in said game(s) is crucial.
"Yo he just foshed us hard."

You totally foshed me last night dude
Dude we need Mikie to get anything done tonight, I hope he doesn't pull a fosh and go to 7/11

by Getfoshed May 22, 2016

Fossiloss

The quantity of fossil fuel (gasoline or Diesel) that is lost or wasted by someone idling their vehicle while interacting with a smartphone

Turn your engine off, dude. Idling in your air-conditioned car playing Candy Crush will lead to gallons of fossiloss.

by Dr. GlitterSparkles September 8, 2019