Mong 

Slang for mentally ill person, often referring to people with Down syndrome and commonly used amongst British people

Bob: where’s Steve?
Stan: just at his house being a mong

Mong by EnglishMamba February 6, 2019

Mong 

Blane McGarry

‘Sorry about blane, he’s just a mong’

Mong by Cumlord420 February 8, 2019

Mong 

Blane McGarry

Fuck sake blane you cunt, you’re such a mong

Mong by Cumlord420 February 8, 2019

Mong 

People who are British or have the name

Hugh and Gus you are such mongs

Mong by Wonder Hugh (get the pun?) March 4, 2019

Mong 

Pretty much a retard

The British Prime Minister Is A Mong

Mong by Henry Glasglob May 26, 2019

Mong 

A Mong is used for all pronouns when you refer to them as dumb/oblivious and often do not get obvious hints.

This Mong won’t leave me alone. I’ve cancelled on him 5 times why won’t he get the hint?

Or

I have left this girl on read 5 times in a row, she’ is such a Mong .

Mong by Bringbackaussislang May 30, 2019

Mong 

a person who is annoying and very stupid. you like them sometimes but they do get on your nerves to the point where you have to shout at them!

Example 1
“omg look at this and this and this!”
“shut up you absolute mong!”

Example 2
“i can’t believe he broke up with me. WHAT A MONG!”

Mong by pippppeerrrweesman October 18, 2019