a person who is acting stupid, dumb, crazy, hilarious, angry, high, absent minded, drunk, retarded or weird, and can be any combination of the previous. This word originated in DC and Maryland (and other select places on the east coast), and is quite rare to be heard anywhere else. It is also hard for people to understand it's context who aren't from the area
"your a lunchbox"
"that kid is a lunchbox"
Q: "yo remember at lunch when that retarded kid started yelling and jumping up and down??"
A:"yea what a lunchbox!"
by HQEWQS October 6, 2007
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1.) verb. When in the throes of passion, the man suddenly takes all of his junk (including his flaccid penis) and shoves them into the wide-open and welcoming mouth of the woman.

2.) noun. A woman whose mouth is large enough to accept all of your junk.
(verb) I think I'm going to lunchbox the shit out of Sally tonight.

(noun) Sally looks like a real lunchbox!
by wrflmh April 2, 2014
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A lunchboxer is a guy who brings a lunch to work with him that his wife lovingly prepared for him with his favorite foods. A lunchboxer is usually a more mature knowledgeable worker in contrast to the generation x worker who eats week old dog food out of the vending machine in the truckers lounge just so his wife can get 10 more minutes of sleep.
Old Schooler: "This sure is a good salami and swiss sandwich that my wife packed me today!"

Irish Kid: " Oh quit being such a lunchboxer and showing off. I have to eat another one of these "Paulaburgers" because they are the only items left in the machine again!"
by Petergozinya June 10, 2009
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A male Bulge visible to others.
OH MY GOODNESS, daphne, look at that old man's raging Lunchbox
by Dairylea May 27, 2010
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The term Lunchbox referring to an absent minded individual or “Freudian slip” may have evolved from the phrase “Out to Lunch” or “mentally checked out” for the moment. Later, the term Lunchin was added to refer to an action, event, thing, and person (basically a noun). A Lunchbox is a person which makes you want to Facepalm! Believed to be words indigenes to the metropolitan area of DC, MD, and NOVA.

Your local pothead gets called Lunchbox often. Newly evolved term Lunchbag is a person not even good enough for the Box!
Your a LunchBox
That movie Inception was Lunchin
by CloudKiss March 15, 2011
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Anyone who is your sidekick, or just anyone you ang out with in general. Comes from Jay and Silent Bob: Strike Back.
Yo Lunchbox, come here.
by The Digerati January 10, 2005
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The name given to a mans crotchal protrudence through clothing, normally more evident in people who wear tight trousers or who's surname is Papanagnou.
Check out Papanagnous lunchbox! It was bigger than last week!
by Mattuuu March 10, 2006
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