Top Definition
FMS
abbreviation for the phrase "fuck me sideways"

Used during a time of aggression when something doesn't go according to plan, not actually as a command.

The abbreviation is generally used so parental figures don't know wtf you're saying.
Person 1: I heard you got rejected by that fly ass bitch.

Person 2: Yeah...FMS.
by alwaysmercurial April 20, 2009
FMS
Freak My Shit as in fuck this dick!
Man my bitch FMS last night my nigga and all I could do was be amazed!

I wish she would hurry up and FMS!
by effinprodigious January 03, 2012
FMS
Fuck my school
Something you say when you just hate your school
Ahh, I have so much homework to do. FMS!!
by Avvegc November 11, 2012
FMS
Fuck My Spelling
AnonymousNo27 rolls up sleeve on shit to blind those around self.
AnonymousNo27: Shirt*...FMS
by AnonymousNo27 July 06, 2013
FMS
Fuck My Shit.
can be used in many ways. As a term of Confusion,Surprise or just to show boredom.
example 1: fms, what are you guys talking about???

example 2: fms that really happened!!! :O

example 3: fms, i'm going to bed -_-
by Godzurra August 05, 2008
FMS
Stands for "fecal management system" in the hospital. It is a tube stuck up the anus of someone in the hospital if they are not capable of asking for a bedpan when they need. Used as something derogatory to call a person you don't like by hospital workers.
"I hate that bitch, she is such a FMS."
by SamanthaEmily February 28, 2008
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