Mother Function 

When your a nerd and aren't aloud to swear.

mother function told me to clean my room…so I did.

Mother Function by trufflebutter April 22, 2016

Mother function 

The mathematical way of saying motherfucker, : An insult to a person's well being, or replacement word.

Forget this mother function test

Mother function by Kingdom forest March 27, 2017

Mother Function 

A word used to describe outstanding functions.

Mr. Hanes, how do you derive a Mother Function?

Mother Function by MAKIN' IT RAIN October 10, 2014

motherfunctional

Extremely functional in an incredibly bad-ass and/or cool and hip way.

That program that Larry wrote is one motherfunctional piece of software!

Arlene's husband ran into the hot water heater AND fixed it all in the same day. That is one motherfunctional dude!

motherfunctional by The Original Pez April 4, 2008