Top Definition
(merf) noun. acronym for Mom I'd Run From. The opposite of a MILF. A mom you definitely would not want to do.
"I don't know where she gets her good looks, her mom is a
MIRF!"

"Your momma's so ugly she's not a MILF she's a MIRF!"
by pose2pose October 29, 2006
16 more definitions
(merf) noun. acronym for Mom I'd Run From. The opposite of a MILF. A mom you definitely would not want to do.
"I don't know where she gets her good looks, her mom is a
MIRF!"

"Your momma's so ugly she's not a MILF she's a MIRF!"
by pose2pose September 16, 2006
Mother I'd Run From
Dude, check out that MIRF. Fuck, here she comes!
by Anonymous user 123245434454353 January 18, 2009
Abbreviation of the town of Mirfield, situated in West Yorkshire, England.
Boy 1: Gonna go out in Mirf tonight?

Boy 2: Fuck owt else to do.
by kermitthetoad December 02, 2009
a wedgie that goes very deep. Also, a type of hole.
Dude, I got a huge mirf!
Don't let Char into my mirf hole!
by Mirf Char January 05, 2011
Mother I'd Resort to F*cking. To be used in a situation where you wouldn't necessarily LOVE to bang this chick, but you wouldn't entirely dismiss the notion. Usually a single parent co-worker with 1-2 children, who never stop talking about their kids while you're thinking "...eh i'd plug this chick."
Female: "..so OMG, the other day, in quilting class, we started using pink fabric and OMG it was so cute you should have seen {insert child's name} he/she LOVED it!"
Male: *Thinking* 'I probably would stick it to this person. I wouldn't quite give her MILF status, but I'm willing to go MIRF'
Male: *speaking* "oh no shit, that's awesome"
by millz207 March 01, 2015
Mothers I Refuse to F*ck.
Although Amir claims to have the hottest wife on the planet, to me she is nothing but a M.I.R.F.
by THe MILF hunter June 17, 2013

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