look up any word, like cleveland steamer:
 
2.
someone very skilled or proficient
John was a crackerjack of a mechanic: he could make a Mustang hum going in reverse.
by Jon64Bailey January 11, 2008
 
8.
●A noun used to describe an action as "cool","dope","crazy",or "sweet".(Like the popcorn)

●A term also used for naive caucasian boys.
1.
Friend:"I made out with Jennifer last night!"
You:"That's fucking cracker jack,man."

2.
Douchebag Friend:"Probably got a acceptance letter to Harvard already"
You:"You're a cracker jack"
by wizardswag May 06, 2012
 
9.
racist term for a white person
shut up crackerjack
by uncle rukus March 01, 2011
 
10.
A name the Marines use to refer to the Navy or Navy uniforms.
Me: He wears ACUs, right? Guys in those are hot.

Marine Brother: Hes a god damned crackerjack, sis.

They wear those little sailor suits.

Me: D: DO NOT WANT.
by MetaKittie January 03, 2010
 
11.
testicles
as in "im of upstairs to whack my crackerjacks"
by Joe Rodgers (cotk) May 08, 2003
 
12.
Someone who is a crackerjack, is someone who is greatly humourous, and is able to "crack" you up, i.e, induce a great amount of laughter from you.
Adam: So then I said, that's not a chevy, it's a fjord!

Gary: You're a real crackerjack, Adam.
by Mister Schmidt May 23, 2010
 
13.
a stupid dumbass white person
you cracker jack i thought everyone knew that
by cwf23 April 06, 2006
 
14.
A game where several men gather around a cracker (I always picture a stoned wheat thin) and furiously masturbate onto it. Whoever ejaculates first wins. By a similar token, the loser is he who ejaculates last. The loser must consume the cracker as a penalty for sloth.
I got the clap from losing a game of cracker jack in college.
by Casey R. June 03, 2005