Top definition
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
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2
FMS! That burger was huge!
by Montespan July 12, 2011
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3
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
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4
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
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5
AnonymousNo27 rolls up sleeve on shit to blind those around self.
AnonymousNo27: Shirt*...FMS
by AnonymousNo27 July 06, 2013
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6
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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7
Foot in Mouth Syndrome:

When you add something to a conversation, which is followed by an awkward silence...

Then you know that you should have kept your mouth shut.
Guy: Your sister is hot
Chick: .......
Guy: (oh that fuckin FMS... shouldn't have said that)
by thunderchid January 14, 2009
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