Jimmy Mac 

A commonly used term to denote a firearm or gun in Baltimore in 2016.

I left a Jimmy Mac on top of the car tire in case we need it.

Jimmy Mac by Agent0000 February 27, 2020

Jimmy Mack 

Condominium Protection

Did you skeet yepp wit no Jimmy Mack

Jimmy Mack by 4 mile savage August 21, 2017

jimmy-up the mack 

A Vandergrift Casino Theatre prank used to make freshman stage crew people go insane trying to find out how to "jimmy-up the mack". Bottom line: the "mack" that needs to be "jimmied-up" does not exist!

Cast member: "Go jimmy-up the mack, Bob"
Bob (first year stage crew): What the heck is a jimmy-up the mack!

Cast member: Just go do it!

Bob: What is it!

Cast member: The show will be ruined if you don't jimmy-up that mack! Now go!

Bob: but!....but!

Cast member: GO!

jimmy-up the mack by Rekced Yrrek December 3, 2006

machine gun jimmy 

That one douche bag who is always in the garage with a machine gun on the Villa level of Rainbow 6 Vegas 2.

WATCH OUT FOR MACHINE GUN JIMMY!!!

Did you kill machine gun jimmy yet?

You go up the stairs and I'll take out machine gun jimmy.

machine gun jimmy by Penguin156 August 24, 2009