mongo 

a philly word meaning
an asshole
an idiot
a moron
stupid
or a dumbass

"dude stop acting like a mongo" or "you're such a mongo."

mongo by supah fly samm February 2, 2008

mongo 

A handicapped or mentally retarded person.

"Leave Timmy alone, he's not a mongo he's special!"

mongo by Phallic Slime August 23, 2009

Mongo 

A player of Pokémon Go

I had to jump out of the way of a mongo this morning. I think he was chasing an Aerodactyl"

Mongo by Laserkinskiddo August 22, 2016

Mongo 

It’s a stupid person who thinks they get haircuts from a laundromat

Shay is such a mongo

Mongo by hehehehwhehehehe February 19, 2018

mongo 

meaning a lot, a bunch, very, mega and such, large.

I took a mongo fast shower;
I had a mongo long day;
Prom was mongo boring yo.

mongo by Liefde March 14, 2009

mongo 

a skate stance in which the person pushes either goofy to ride regular or pushed regular to ride goofy.
skating stances
goofy: right foot stays on while the left foot pushed and you face the left as you ride.
regular: the exact opposite of goofy.

skater1: "dylan pushes mongo"
skater2: "yea i know, theres no point to it."

mongo by EnjoiSkater7594 July 3, 2008

Mongo 

Any discarded object which is retrieved and found interesting anew.

I can't believe we found that mongo painting in the thrift shop, it will be just perfect in our livingroom!

Mongo by ward freeman March 8, 2005