Top definition
mel·low·box   mel-oh-boks noun; adjective

1. soft, controlled, boring and serene.
2. disinterested, inability to enjoy social settings.
3. person who spends a lot of time sitting or lying down.
4. person that lacks enjoyment of alcohol and fun.
5. antonym of slaybox
Disneyland's number one customer is a mellowbox.
by myalterego October 31, 2011
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