!MONG! 

!MONG! is something that you yell uncontrollably after being infected with the very contagious Yuri disease in The Specialists RP.

Random: OMFG I just got infected with yuri!
Random 2: Stay the fuck away from me
Random: !MONG!
Random 2: AHH FUCK YOU!
Random: !MONG! !MONG!
(The body of Random has been recovered near the mall)

!MONG! by Senzuri Brooks November 22, 2007

mong rider

A mong rider is an old style road bike. Often riden by 'hipsters' these days.

A: How are you getting to the party?
B: Riding my mong rider

mong rider by oneworddefinition August 17, 2011

train mong

People who travel on trains and are utterly oblivious to anyone or anything in their immediate vicinity. They annoy all the time just by being in the same carriage and frankly should be culled.

Who the fuck is making all the noise licking crisp salts off their fingers? Oh yea, it's another fucking train mong.

train mong by Ow See April 19, 2018

Mong Bix 

The practise of smoking cannabis through a bong while under the influence of ketamine.

This is a rather intense high, somewhat psychedelic, and sometimes even enjoyable.
The name is a bastardisation of the term Bong Mix, re-arranged so because this activity is known to cause severe episodes of monging out completely.

Bonging and snorting Ketamine together is called Mong Bix, and its fucking intense.

Mong Bix by Fludence May 25, 2010

Mong Out 

To relax but in an entirely unproductive manner. Essentially sit in you own filth and do nothing useful.

Not today man, I just need to mong out for a while.

Mong Out by Lolence April 17, 2019

mong bong 

When someone puts the whole of their mouth around the top of the bong instead of inside the lip.

davy hume totally did the mong bong on that cone.

mong bong by humey swingers May 16, 2009

Mong off 

When 2 people smoke cones back to back and both try to not mong it before the other person

Lets have a mong off

Greg monged it on his 5th cone, decent mong off

Mong off by Mong off January 2, 2022