Top definition
a kid who is alive to make the classroom look full. has no real purpose for living, and when outside of its normal habitat, one cannot function. it goes home to its filler parents and recharges for the next day. usually has good grades; when spoken to by a cooler person, tries to be cool, although its efforts are futile.
"did you see sasha in 3rd period"
"no, shes a filler kid"
by DANIELelijah May 11, 2008
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