1 definition by theOGGrandma
A descriptive for a mid-twenty something who would always prefer being at home with a blanket and Netflix than being out partying.
"Wasn't Leah meant to be coming tonight?"
"Oh, you know she is such a Grand-Millenial.... it's past 9pm"
"Oh, you know she is such a Grand-Millenial.... it's past 9pm"
by theOGGrandma October 08, 2019
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