USMS

1) Whats USMS, its like a pile of dog crap, no one knows where it came from or how it got there but when you see it, all you know is its a load of shit

2) United States Mystery Service, or, United States Made-up Service

"LCDR Reagan, wait, wasn't he a gunnery sergeant in the marines?" "Yea, but he joined USMS and anything's possible there"

by Captain _____ GC September 15, 2013

USM 1940s

A small group that has a great fort but has toxic Lieutenant Generals who arrest people for hopping in a truck without warning.

“I’m a Lieutenant General and I love arresting people for no reason” USM 1940s

by USM 1940s November 16, 2020

USM 1960's

The United States Military in a lego game. They get all the girls roleplaying as some Lego Military Men.

"Hey, are you in the USM 1960's?"

"The what?"

"THE LEGO MILITARY YOU UNCULTURED SWINE!"

by AliveMessi102 November 13, 2020

USM

Unidentified Squirrel Meat

I went to my local fast food restaurant and got some USM

by Jupitertints September 24, 2023