An otherwise thin person with a large gut. The protuberance should be large enough to rest a bottle of beer on (at least) without it falling off.
Hey, lunchbox, how's that diet going?
by Woodenhead December 30, 2005
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1. Jayson Clark(fat person)

2. a very large person

3. an object used to carry food for fat little kids

1. OK, lunchbox...I mean Jay.

2. Jesus Christ lunchbox, stop trying to take my lunch.
by Ron February 20, 2003
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What do lunchboxes do? They open so what do thots do?
Cuz don't be messin' with Keshia her pussy like a lunchbox
by TrappKidd August 1, 2015
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when someone above the age of 18 ingages or attempts to carry out any type of physical relationship with someone below the age of 18.

Kenny is LUNCHBOXING on a 15 year old
by lunchboxXx1313 April 9, 2009
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A dude who when he gets smacked acts like an annoying fuck.
Lunchbox: Dude man im am like so high right now man.

Lunchbox: Man I cant feel me feet man im so high man i bet that was some KB man.

Don Gongul: Shut the fuck up
by Scouse April 27, 2003
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A small weinered round little toad who hides hot sauce under his bed, drinks sprite and ditches his friends for the first girl to give him pussy.
Hey Lunchbox grow some nuts and stop paying those vet bills, its not even your dog.

Yeah I know its hers.

So what be a MAN not a Lunchbox.
by Daddy November 12, 2003
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She had a great lunchbox
by Twofries November 3, 2003
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