MMF 

A threesome involving two men and one woman. There are several options for who actually has sex with whom:
(1) the woman in the middle;
(2) one of the men in the middle;
(3) everyone has sex with both the others.

Thanks to Lara, I managed to get Toby into bed on Saturday; he went for an MMF.

MMF by OrangUtanUK June 18, 2003

MMF 

Threesome involving 1 female and 2 men. The letter order represent who has sex with who. In this case one man in the middle. He has sex with both the female and male partner.

This is the correct definition.

I have had a threesome with two men but it was mfm. I want to try it mmf. I want my ol man to fuck the other guy while that guy fucks me

MMF by Oracle❤ February 22, 2018

MMF 

Acronym= Male Male Female

A threesome with 2 men and a woman. The men are most likely bisexual.

Theres a hot new MMF video on that website.

MMF by ron October 16, 2004

MMF 

MMF is threesome with two bisexual men and a woman. Unlike MFM, which happens with two str8 guys and a woman.

Marko: My wife and I had MFM with some guy and it was great. Now we want to try MMF too, I want them both to give me a blowjob.

MMF by Mangasevic November 29, 2017

MMF 

MMF is when 2 males and one female have sex in 1 bed at the same time.

Jack: hey Zac,
Zac: ya?
Jack: wanna come over to my house and have sex?
Zac: with you? your damn gay!
Jack: ....
jack: i mean with my girlfriend too...
Zac: you mean that hot chick that gave you that blowjob?
Jack: ya...
zac: k, ill go
Jack: will you give me a handjob too?
Zac: i knew you were gay! you just wanted to hump me!
Zac: FUCK OFF, BITCH!
Zac: YOU JUST WANT TO DO MMF!

MMF by 40yroldvirgin November 8, 2006

mmf 

mental mind fuck

When the information or circumstances are too extreme to be comprehended.

"He says he loves me, but he still wants to be with his wife. It's a real mmf."

mmf by Heura April 20, 2012

mmf 

"mentality my friend". Mmf is used to describe people who don't know how to dress or purchase and wear an item of clothing that is just completely horrifying.

*Sees girl passing by with pink sparkly uggs* Girl 1: Did you see that? Girl 2: Mmf.. Girl 1: I know omfg.

mmf by doyoueverjust December 15, 2013