Huh ?     From Urban Dictionary

mothers, whether married, separated or divorced, that a male individual sees as physical attractive enough to want to have sexual intercourse with them. Just cuz their moms doesn't mean that they don't need a spark in their love life. If they've ever breastfed,they have really responsive nipples and a core of erectile tissue in their breasts. The ones in good shape have worked at regaining control over their vaginas (Kegel exercises).MILFs are usually real careful about birth control, they know accidents happen but they take responsible steps. They want to fuck with abandon, with no romantic complications for their under-19 family.
A MILF is any mother that is sexually desirable.
Dude, what's a MILF?
M-I-L-F, Mom I'd like to fuck!
or
Woah, Johnny, your mom's a MILF!
Stacy's mom- because she's got it going on.
Refer to music video.
Dude... Cassandra's mom is a milf! MILF! MILF! MILF!
When you're going out to basketball practice and you see ur best friend's mother bending over to pick some flowers and she's got a thong on Got MILF?
Dood... Did you see that MILF walk out of Toys 'R' Us?
My friends mom Darlene is one hot ass MILF!

Mother I'd Like to Fuck

Some hot ass mom of a friend's that you wanna do so badly
Mom I'd Like to Fuck.

Word made famous by the classic movie American Pie.
Quite simply: Mom I'd Like to Fuck
A HOT mom you'd wanna hit all night long.
Mom I'd Like to Fuck
Mother I'd Like (to) Fuck
An extremely hot middle aged mom, who leaves you in mastabatory bliss nighy and night.