Mums Brain 

This orginated somewhere in Melbourne, Australia and is used to make people believe in what you are saying . its basically the same as 'mums life'

Person 1 : Did you actually drop 50pt in that basketball game"
Person2 : Mums brain I did

Mums Brain by Nigga off that henny June 21, 2021

mums the word 

to keep quiet about something

I heard Elaine's parents are out of town tonight and she's lonely! I'm gonna go over. Mums the word!

mums the word by P Ha September 29, 2004

mums life 

Used in a conversation to prove a point.

Bobby; My dog did a backflip today una
RS; Nah your chatting ****
Al-Wi; Truss, don't believe her
Bobby; mums life she did, the backflip was mad still.

mums life by bobsR January 28, 2018

Mums soul 

Kind of like saying you promise? Or saying you swear on god

Say mums soul that you kissed that girl

Mums soul by Blazing bull dog December 31, 2021

mums the word 

to keep quiet about something; my lips are sealed.
mum means mmmmmm (the sound made when putting your lips together)
came from Shakespeare quote:
"Seal up your lips and give no words but mum."

person 1: "Please don't tell anyone about my affair."

person 2: "Don't worry i won't. Mums the word."

mums the word by bnm15 July 4, 2009

Mums on the menu 

Your mums on the menu

“Jeffery’s mums on the menu lol”

“Yeah he’s crying”

Mums on the menu by AlexRobertsonIsClapped March 17, 2021

mums gay 

Worst insult know to mad

Teacher: Jonny quite down
Jonny: mums gay
Teacher: “dies”

mums gay by Big mike44 May 7, 2018