MOS

An individual from the Quad Cities area pretending to be a marine.

Look at Ron the MOS, he's not a real marine

by Jeffbowman October 13, 2025

Mo

Yes

My answer is "mo"

by Epic_redsolocup August 28, 2021

Mo’ packed

More packed

Yo this car is mo’ packed

by Beans4life# October 18, 2020

big mo

big mo is the type of person you want to be, its a charming person with the most attractive eyes youll ever find. everyone needs a big mo in their life to keep them motivated

i wish i had a big mo in my life

by Mo Monsta April 28, 2022

Mo Bamba Effect

The effect when someone starts playing Mo Bamba by Sheck Wes and everyone in the general area gets hype for no reason

Person 1: “Yo james just started playing Mo Bamba”
Person 2: “oh God, here comes the Mo Bamba Effect”

by QUANDONDUNGLE February 27, 2023

Big Mo

Being trumped, scammed, or done over in some sense

Jeff's gf left him for Tony. Tony has Big Mo'd Jeff.

Jeff abused the rental car. He Big Mo'd it for the rental company.

Jeff promised several dreams to Jennifer to have sex with her. In the end, it was all lies, and once he shagged, he left. Jeff Big Mo'd Jennifer.

Actually

by Mig bo June 15, 2024

MO

A slang used in the Philadelphia are for homosexual. Short for homo.

Did you see the new kid from San Francisco? He's probably a mo.

by morider June 12, 2020