Moogin 

To go for a smoke with a welshman

Spud let's go for a moogin

Moogin by Inspector hector June 23, 2017

mongan 

verb. To agree to attend an event or gathering, but cancel at the last minute due to external circumstances, especially if one has made a habit of such behavior.

noun. The act of monganing.

Billy said he was coming to the party, but we didn't expect him to actually show up. Sure enough, his house flooded and he monganed, just like last week's happy hour, when he was in that car accident.

Tina was supposed to go to the game night, but she had to work late again, so she pulled a mongan.

mongan by user4656 November 4, 2011

monogin’ 

Verb: Being monogamous, in the present tense, not guaranteeing permanent monogamy. See permonogin’.

My partner and I are monogin’ for now, but we’ll see what happens at Burning Man.

monogin’ by KnottyP November 11, 2019

mingin' 

This is a Glasgow slang word, for stinkin, terrible etc

"The house was mingin" meaning it was dirty, smelly, the kind with sticky carpets!!
the garbage bin has not been emptied for weeks--mingin
Evolved to mean anything rotten, she was mingin.... stinkin

mingin' by Alex August 23, 2003

Mongie

someone who is not quite all there in the brain category; they do stupid things, they probably have issues with being gainfully employed, they sit in strip mall bars and talk about their old glory days in high school

He's not going to work today, he's a mongie.

Mongie by OBNJ1988 June 9, 2018

Moggin 

The act of having huge muscles and showing them off in public. Typically by flexing and doing bodybuilding poses.

Bro did you see Arnold on the beach? He was straight up moggin on everybody.

Moggin by Swoledaddy94 February 20, 2022

Monguin 

A Monguin is a retarded penguin

Look at that monguin over there. He's stuck on that ice floe.

or

Arthur is such a monguin he thinks he's a water sheringham

or

Mummy! Mummy! Can we go see the monguins in the zoo. I like when they lick the windows!

Monguin by arseblog2 September 24, 2010