"Suck your mum" is a term used to offend others. It originated in London and is widely used throughout all of Britain.
Roadman 1: Oi you likkle pussio, I heard you man been chatting shit

RoadBoy 1: Suck your mum bruv. I ain't no pussio to chat like that. If you gwarn start beef then lets do it.

PROCEED TO FIGHT..
by OfficialRoadBoyOneAndOnly June 23, 2018
A phrase used by City Folk to tell people that their opinion on you is irrelevant and you don’t cares , hence the word ‘ suck your mum ‘ which means go occupy yourself with something else rather than concentrating on me .
Brad - “ Yo Jamie I heard you lost that skrap . “

Jamie - “ Suck your mum . “
by LondonSlangTing February 14, 2020
A phrase to shout when someone insults your tea drinking habits, or when they complain about you praying to that picture of the queen on your wall.
Person One: "Stop drinking that disgusting tea!"
Person Two: "Suck your mum!"
by February 23, 2021
Kid 1: oi bruv u got them tings we were on about ye?

Kid 2:nah bruv suck your mum
by Myginit August 5, 2020
when having and argument wiv someone this is the way to stop it.
go and suck your mum!!!!
by liam April 8, 2005
A phrase that is used against people telling them to go away
Your such a bitch

Suck your mum
by Arse hole August 5, 2021
A term used by the poorly educated underclass of Britain to cause offense, although its difficult to imagine quite which part of 'your mum' you're supposed to 'suck'.
Oi! What you chattin shit about? Go suck your mum!
by Nanna_MoOn August 2, 2008