FSM

noun;acronym for being in "FUCKING SCIENTIST MODE"; often induced by alcohol or by intellectual beat downs bestowed upon a grad student by their adviser.

Sorry bro, no time to talk, I'm in FSM after I drank a pitcher of margaritas at La Fiesta tonight. I might actually have a shot at getting out of this hell hole if I can get some of these protocols approved.

by SASbandit February 14, 2012

FSM

Flaka, Smartass, Malicious
a group of 3 friends that are so badass but each of them have their own personality

These three girls are SO FSM.. They are so opposite from eachother.

by SmartassofFSM April 4, 2009

FSM

Field Service Manager

We have problems - better call the FSM.

by vaeren January 13, 2007

FSM

FEMININE SUPER SEXY MASTURBATION

when a gurl ages 15-18 massages the outter and inner walls of her vagina or butthole with her finger, a capped marker, or a bananna is what is decribed as FSM

by Shawman of Sexy November 3, 2009

FSM

FEMALE SLUT MAGNET:
WHEN A MALE OR FEMALE IS A MAGNET FOR FEMALE SLUTS

MY FRIEND IS SUCH A FSM.

by SILVER HELMET RETARD May 17, 2009

FSM

FRIDAY-SATURDAY MELTDOWN:
WHEN YOU START GETTING FUCKED UP ON FRIDAY AND BEFORE YOU KNOW IT IT IS SATURDAY

"DUDE I TOTALLY HAS A FSM THIS WEEKEND!"

by SILVER HELMET RETARD May 17, 2009

FSM

Fat Slut (from) Mahopac

Kevin Pushed the FSM down the stairs because he feared she was pregnant.

by WordsOf914 November 11, 2007