Shuck your nan 

The etymology of the expression "Shuck your nan". Is based on the common London based insult "Suck your mum", "Shuck your nan" is rooted in the term "to Shuck an oyster" or to open/de-husk, meaning in order to fuck someones nan, she is so old she would need shucking - or prising open.

Which is nice.

"you're a plum mate"
"Yeah? Well Shuck your nan"

Shuck your nan by CumquatMay April 23, 2023

suck your nan 

the sucking or slurping or ones own grandmother. It is an action frequently performed by larger men. It is used as a curse or offence

'Oi fatty james, go suck your nan'

suck your nan by liquidass99 May 7, 2016

Suck Your Nan 

To supple on ones grandmother.
Popularized by United Kingdom gangsters and hip hop artists.

Gangsta #1: Oi mate gimmie your phone.
Gangsta #2 Suck your nan blud.
Gangsta #1 Brap Blap

Suck Your Nan by OhizzleSYN October 3, 2010

suck your nan 

Means that you suck your nan

Ayo you likkle boy, you bare lookin wet today man.
"Leave me alone fam, suck your nan."

suck your nan by ITellTheTruthAndNothingButTheT April 16, 2021

Suck your nan 

When you think you’re all that just go home and suck your nan you nasty yute

Suck your nan fam

Suck your nan by Your nan 101 July 20, 2020

Suck your nan day 

5th October

Ok

Guess what today is suck your nan day!

Suck your nan day by Jack69696969696969 October 1, 2020

suck your nans left onion 

The act of sucking on your grandma's left booby.

Donald was told to 'go suck your nans left onion!

suck your nans left onion by Paedo69 December 23, 2017