mong 

A shortened version of the Shakespearian insult 'fish monger' from Hamlet directed at Polonius. There is debate to what the original meaning was but it usually donates to the nature of the fishmongers of the time who were money grabbing, corrupt, stereotypically simple and of low moral fiber. So mong generally refers to a despicable and or stupid person.

(Disclaimer: this is not a stab at anybody associated with the fishing industry. it is just an interpretation of another mans writing and opinions)

"you complete and utter Mong"
"You can't stick that there, you mong!"

mong by Kaiser_Sma August 26, 2004

mong 

the word 'mong' means retard, commonly used as an insult

The person who is reading this is a mong

mong by Jazz Donkey April 6, 2004

Mong 

Short for mongrel. A term usually used to describe someone who goes off with your ex boyfriend the minute you split up. At the same time she is also a 0 rating on the stunning scale and can often look like a ugly dog or horse. The mong also tends to buzz off presents you bought the ex, unknown to her.

How did you break up?
Oh he went off with a mong.
A Mong?
Yes, apparently a dog was let loose out of the kennels.

Mong by scoopdapoop June 19, 2011

Mong 

A fast-spreading term meaning to relax; procrastinate; sit and timelessly observe your inner feelings, often after taking cannabis.

I'm really stoned, lets mong for a while.

Mong by JimmyD August 30, 2003

Mong 

thongs meant for the male gender

Example 1: Wow thats one foxy mong you got on there buddy. Loving the red lace.

Example 2: Bro I got mongs for a great deal this weekend. Now, I won't have any gnarly underwear lines when I wear my jeggings.

Mong by quinoaforlunch September 15, 2016

Mong 

Mong could be a word used to substitue other words. It could act as a pronoun, noun, adjective, verb, gerund, anything! Mong could be the most flexible word there is.

"I just monged another Soduko!!!"
"Why are you being such a mong??"'
"Hey, hows it monging?"
"Dude, that is so mong!"
"Mong loose!"
"Wow, he just threw up! He's such a monger."

Mong by idee93 August 21, 2011

Mong 

"Mong is the stuff that comes out when you push down on a pregnant woman's stomach."

- Southpark: Season 3, Episode 17, "World Wide Recorder Concert"

- A New York boy defines this word for our favorite four youngsters from Southpark, Colorado. Cartman came up with the word "mong" to call out the kids from New York, b/c they believed it was NOT a word.

My mom is so pregnant that when I sat on her tummy, mong came out of her like Niagara Falls.

Mong by Misamore December 27, 2010