FSM 

Stands for Flying Spaghetti Mosnter. The Flying Spaghetti and Meatball monster is believed to be the one who created the world, by Pastafarianists. Initially Pastafarianism was created to protest the Kansas State School Board's decision to teach "Intelligent Design" in schools, one man invented a parody religion, Pastafarianism. Pastafarianists believe the FSM created the world. The FSM and concept of Pastafarianism eventually became an actual religion, one with a bible and church. Unlike what some people may believe, the FSM was not created by atheists to mock the concept of religion.

Pastafarianists believe in the FSM.

FSM by Mikazuki August 22, 2010

FSM 

The god of the Church of the Flying Spaghetti Monster, which is not a conspiracy to create a holocaust of religious people, unlike what some definitions would like you to think.

His noodly appendage having shown me the one true faith... Well, besides Buddhism, Islam, Obamaism, and even Christianity, and FSM. Oh, I said that already.

FSM by Hughdo November 19, 2010

FSM 

Flying Spaghetti Monster

What would FSM do?
WWFSMD?

FSM by Carmen September 29, 2005

FSM 

The almighty Flying Spaghetti Monster. Under the religion of Pastafarian, you worship this almighty deity.

Once i found the FSM, i was saved. His almighty sauciness engulfed me, and i was at peace with the world.

FSM by THIS_IS_MARTA February 11, 2009

FSM 

Female Seeking Male(ex:for dating)

Used in personal ads. I am a Female Seeking a Male. I am a FSM.

FSM by jean1963 July 20, 2008

FSM 

Full Sesh Max. Used to express imence joy and satisfaction.

PT: we don't have class!
Rahul: FSM!

FSM by Seshboy69 September 25, 2018

FSM 

FSM, meaning Fuck Starrs Mill, is a term to describe the hatred felt by the students of Mcintosh High School to the students of their rival team, Starrs Mill High School, both in Peachtree City, Ga. The Starrs Mill Panthers are entirely inferior in every way to the Mcintosh Chiefs.

Chief: That buzzer beater at the basketball game was amazing! FSM!

FSM by Clairelisette February 22, 2012