What is Jewfill?
1.
The act of refilling your beverage at any fast food restaurant, either by way of the soda fountain, or by going back to the counter to ask.
Guys, hold on, I'm going to get a jewfill of coke before we leave for the strip club.
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2.
an action, usually associated with some one short changing you, gyping you or just being half assed about something.
After asking Paul to fill up my gas tank, I realized that he only put five beans in the tank, a jewfill.