Mother Father Chinese Dentist 

Very obscure slang/substitute for swearing in frustration or anger.

Origin:
HBO television series
Mr. Show with Bob and David (1998 season 4, episode 5: It's Perfectly Understandable)
Sketch: Pallies (A Goodfellas parody, edited for television)

David Cross turns to Jay Johnston and yells (with terrible over-dubbed editing):

"Well you's can both grab one of my *books*,
you mother*father* *Chinese dentist*"
before shooting Jay in the head.

According to the Season 4 DVD commentary, years after the show ended, cast member Paul F. Thompkins had overheard someone talking on a cel phone in a bar utter the phrase "Mother Father Chinese Dentist!"
When asked if she was a fan of the show, her reply was "What?"

Mother Father Chinese Dentist by FlowersInMidgar April 19, 2007

Mother Father Fucker 

1. A Mother Father fucker is similar to a mother fucker. A mother fucker is someone who fucks your mother. A Mother father fucker is someone who not only fucks your mother but he fucks your father too. He may, or may not be Bisexual.

Shit! My mom and dad both have herpes! There must of been a mother father fucker loose!

Mother Father Fucker by burning potato August 14, 2015

Son of a mother father 

A term used on someone who frustrates or aggravates the user of the word. The male form of daughter of a mother father

"Son of a mother father gonna try to pwnz me like that!"
"Haha! i thought you were gonna say something else!"

Son of a mother father by Arthur November 16, 2003

ur mother father

Worst insult to be ever created.
Worst then "ur mom gay" and even then "ur granny tranny".

Person no.1: *searches google for "ur mom gay"

Fbi agent in his phone: ur mother father
Person no.1 *dies*

Person no.1: *searches google for "ur mom gay"

Fbi agent in his phone: ur mother father
Person no.1 *dies*

ur mother father by Lil niBBy April 11, 2018

HELLO MOTHER FATHER 

It's like Hello Mother Fucker but 0 rudeness
USE TO TROLL PEOPLE

YOU:hello mother fucker
ME:hello mother father

HELLO MOTHER FATHER by STEAVEBRINE March 24, 2023

word to your mother and father combined 

An emphasized variant of the phrase word to your mother, but in the form of a friendly insult. Limited in use, mainly by geeky technophiles.

*Player to opponent, after winning a game of Axis & Allies (total victory condition)*: Oh, you just got owned! Word to your mother and father COMBINED!

word to your mother and father combined by isaacw January 22, 2009

ur mother a father

An old insult, forgotten by many. It give the opponent you use it on terrible confusion, especially when you say this after you say "ur mom gay". It is worse than all the "ur" insults combined. Yes, including "ur dog a frog". Everytime you use this insult, a gay mother somewhere in the world will die.

Bobby: You're an absolute fucking walnut
Jeff: Ur mom gay
Bobby: So what?
Jeff: Ur mother a father
Bobby: *suffers a heart attack and fucking esplodes*

ur mother a father by keay April 11, 2018