n., a used car gifted to a college student but that formerly belonged to a formerly living relative. Easily recognizable by its vast size and American make. Originated at the University of Virginia in the 90's. Also known as "dead relative", "dead grandpa", or "dead uncle".
Josh, your 1985 Lincoln Town Car is clearly a dead grandma. It takes up 2 spaces in the dorm parking lot and smells of thanatopsis.
by Fire Me Hotly May 27, 2009
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A term used in a aggressive manner to display your passion in the truth of what you are saying or doing. It is a very escalated version of on my grandma. Not only is it on a grandma, it is yours...and she's dead. (currently or predestined)
dinkle: BRO I GOTTA FINISH THIS PAPER!
Jefferson: On yo dead grandma you not doing that shit.

dinkle: *cries* you right.
by KevOnGod May 03, 2021
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