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An abbreviation and brtisish for swear on my mums life, and is used in the very same way
Greg: Did ya snitch on us you plonker
Tyrone: Nah, mums I didnt, I swear
Mums by Plankingplonker69 June 10, 2018
When you need to swear down on something you say ‘mums’. Commonly used in London slang.
John: did you pull last night?
Jim: yeh man I did

John: Nah, I don’t believe you

Jim: Mums! I swear I did!
Mums by Rg113 October 10, 2018
from what i know this is a australian word, mums is another way of saying you're swearing on your mums life
person 1; did you touch my things?
person 2; mums i didnt
mums by yeeeeeeeeeeeet yah May 12, 2020
Like sayin i swear
promisin
-used by chavs/roadmen
“Your gf cheating
“Acc? Say mums
“Mums”
mums by a1.shiver.me.timbers November 23, 2020
Mums is a way to say "On my momma"
James: "Say mums you pulled Jane"
Jack: "Mums@
Mums by NacksDon123 July 16, 2022
1. Short for Chrysanthemums.

2. Middle-aged ladies who like to drink tea and gossip on Sunday nights.
1. Look at those Mums! How pretty!

2. I wasted an entire evening drinking tea with the mums. Big mistake.
Mums by Regina4047 October 29, 2023