Top Definition
A way to describe your old-ass neighbors who may engage in the following behaviors:

-Calling the cops on your party
-Asking you to move heavy objects
-Putting plastic on their furniture
-Smelling like old people
-Using grocery carts
"Boy, my grandneighbor totally ruined my bbq when she called the cops".
#grandmother #grandfather #neighbor #buzzkill #old
by Justin Q May 09, 2009
5 Words related to Grandneighbor
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