Predicting what happens in sports against your friends. Winner gets a reward. Loser gets a consequence
Bro 1: Bro, why is he paying for your drinks all night?
Bro 2: Because I destroyed him lunchboxing.

Guy: Why did you shave off your eyebrows?

Girl: Lost at lunchboxing. Couldn't hit a shot to save my life.
by sports_R_fun July 16, 2022
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Formed from the word lunchin. A lunchbox is a clueless high kid, who acts stupid, and lacks common sense; usually perjorative in nature.
That kid is such a lunchbox!
by Kat November 20, 2004
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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 corporate planning technique similar to 'timeboxing' where ones work schedule or current task is bounded by a certain time frame, in this case the need to go to lunch.
PM: "Did you adjust the story points for tomorrow's scrum?"
Dev: "Sorry Bob, I was too busy with real work and then I got lunchboxed."

One dev to another: "Yeah, we'll definitely be lunchboxing Bob's request."
by smartasskicker July 9, 2011
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An kinky act in which one person lays down with celophane over their lips and the other person shits on the celophane.
John and Jen loved lunchboxing when they had to take a dump and were horny at the same time.
by Dirty O Fries June 27, 2004
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