1 definition by M. Jackson

1. A morbidly obese, unclean, and overall dirty human being. Usually has messy, un washed hair, dandruff, and large stashes of pornography hidden in crevices in his room.

2. A box.... that holds lunch and or other objects you might generally find in a box.
Fatass: ...*takes a bite of doughnut*

Ricky: OMG look at how fat that kid is!
Dan: I know! He is such a lunchbox!
by M. Jackson January 31, 2007
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