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.

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.

Acronym for Fuck Me Sideways

fuck me sideways; saying you would rather be fucked sideways than whatever else is bothering you; this is a better option than the other

Freak My Shit as in fuck this dick!

Acronym for Fuck My Spelling. Almost like FML only you say it after you realize that you have horribly fucked up a word.

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.

Full Moon Syndrome- The craziness that affects people during a full moon (also applies to electronics or machines) used when ever there is nothing tangible to explain it