MFS

Married Fucking Separately. A play on the IRS tax filing status of Married Filing Separately. Two possible meanings:

1 - People who are married but have their own independent sexual arrangements outside the marriage. Affairs, one might stands etc
2 - People in an open marriage, i.e swingers

My lover and I are MFS

We are An MFS couple, looking for same

by Pseudonymous Bags October 24, 2012

mffffffff

one lucky guy having sex with many many hot chicks m=male/man and f=female/woman thus m+fffffff = one guy and seven hot chicks having sex at the same time. The single lucky guy is the center of atention

I was so lucky to have a mfffffff last night!

by Robbie June 3, 2004

MFP

Middle Finger Paranoia: when a person's always suspecting people of flipping him off.

(A guy in a car waves to Ross to let him cut in front on the highway.)
Ross: Did you see that?!? That assturd just flipped me off!
Josh: No he didn't, you blind fuck. You got some serious MFP.

by TheRatDude February 13, 2009

MFS

Mom's Friend's Son -- The son of your mom's friend that your mom constantly compares you to, because he is always superior to you in virtually everything. With an expression of disappointment, your mom always asks you why you can't be like him.

Me: I'll clean my room later. Let me finish watching the basketball game.
Mom: name of MFS's mom told me that his room is always clean. Why can't you be like him, huh? Why??

MFS: I just got my exam back today.
Me: What did you get.
MFS: Ehh, not as well as I wanted to do.
Me: So what was your score??
MFS: .. 91.
Me: Dang! What an MFS!

by G.dub November 10, 2009

MFCS

Multiple Facial Cock Slaps

In the porno that Josh rented, it showed graphic acts of MFCS.

by radio November 22, 2003

M.F.P

Malicious Female Pig

"Bro, that lady at the DMV is such a M.F.P!"

by Evenor November 17, 2006

mfgrs

Manufacturers

Most mfgrs are using this and that.

by W1zzard March 12, 2003