Top Definition
Deriving from Stockton, Ca a "Jay Size" is a 64 oz fountain drink from 7/11, since Chevron decided to grow a vagina and switch to the 52 oz cups, which have ingeniously been named "Gay Sizes".
Lets go get a dew jay size.
by jhsdsfd-teven August 14, 2009
6 Words related to Jay Size

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