Mother-and-daughter 

It's like what's in Electra's story, but with the daddy replaced with mommy, and they lick each other's pussies.
Btw, pussy DOES NOT refer to cats.

Stephen Hawking's wife and Stephen Hawking's wife are now having a mother-and-daughter now he's dead.

Mother-and-daughter by TheHummingbird November 18, 2020

Ur Brother a Mother and Ur Daughter the Father 

The pinnacle of family-sexuality insults. See ur mom gay and ur dad lesbian.

Combines 2 rhymes and flows them together flawlessly.

This insult causes the earth itself to quake, the heavens to shudder, and hell to freeze over.

Billy: ur mom gay lol
Bobby: well ur dad lesbian
Billy: well ur granny tranny!

Bobby: BRO UR FAMILY TREE LGBT
Billy: -glares- UR BROTHER A MOTHER AND UR DAUGHTER THE FATHER
Bobby's soul leaves his body, and his flesh liquefies. The sun darkens, and the earth shakes.

Ur Brother a Mother and Ur Daughter the Father by MoonCzer March 29, 2018

Mother, the Daughter, and the Holy Spirit

An invocation used by feminists who are Christian

Let's all pray in the name of the Mother, the Daughter, and the Holy Spirit, amen

Mother, the Daughter, and the Holy Spirit by tory borty April 25, 2013

mother thumb and her four daughters 

a guy's hand, as referred to when he uses it to make his special sauce.

Why go out rent a ho when you can make love to Mother Thumb and her four daughters for free?

mother thumb and her four daughters by colonel cheesemonkey June 11, 2007

mother palm and her five daughters 

The art of female masturbation

"Wheres Trinizzle?" "oh she's playing with mother palm and her five daughters."

mother palm and her five daughters by Michael August 11, 2004