Grandmother: Oh, mother effer, I just burned my hands on this apple pie!
Granddaughter: Mother who?
Grandmother: Ahhh... Mrs. Effer... yes, she lives down the street. (Runs away.)
Granddaughter: Mother who?
Grandmother: Ahhh... Mrs. Effer... yes, she lives down the street. (Runs away.)
by Joel67 May 8, 2007

your half-brother's mother
Sam and Calvin have the same father but different mother's. Sam's mother Lydia is Calvin's half mother.
by UnaMalachica February 15, 2010

A 'cleaner' version of Motherfucker, without the "fucker". However, the term is used as if you were simply saying 'damn' or 'fuck', not as if you were saying MF.
This is often heard in very conservative boarding schools, where the students are warned not to use any explicit language, or severe consequences will follow.
This is often heard in very conservative boarding schools, where the students are warned not to use any explicit language, or severe consequences will follow.
1. "Mother Eff", I got an F in that English paper.
2. mom- "GO TAKE OUT THE GARBAGE"
son- "Right while I was watching the mighty boosh, Mother Eff"
3. "Mother Eff", that sucks.
2. mom- "GO TAKE OUT THE GARBAGE"
son- "Right while I was watching the mighty boosh, Mother Eff"
3. "Mother Eff", that sucks.
by weareallmadeofstars July 2, 2009

by ZRXVC September 21, 2023

The mathematical way of saying motherfucker, : An insult to a person's well being, or replacement word.
by Kingdom forest March 27, 2017

The mother that knows best
by Beansss269 June 8, 2022

it's the funniest person who i know. often it's very very severe with me, but she does 'cause for my sake. i love her. sometimes i hate her attitude.
an advice: treat her with kindness 'cause she give you everything, everything that you need.
an advice: treat her with kindness 'cause she give you everything, everything that you need.
by au3.8 November 23, 2021
