Someone incapable of taking anything seriously or getting upset, much to the annoyance of others
Oh my god she's such a Melvinator, she's so damn happy all the TIME
作者 Ten98 2009年3月10日
A pair of jorts or slightly too small sweat pants that are very melvin prone.

These are typically worn by children (by no falt of their own), douchbags, internet gamers, and avid Nascar fans.

The only acceptable situation for the melvinators are for typical household activites that could result in ruining a good pair of pants.
Im going to put on these melvinators to paint the garage, I hope no one I know sees me.

Dude did you see that guy? He must have bought those melvinators in the late 80's.
作者 Matt Bar 2007年6月16日

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