The process by which a Jew evaluates whether a product or service is worth the price tag associated with it.
Stein: Should I go to Dunkin Donuts tonight or eat the Entenmann's I have at home?
Weiss: Brah, Dunkin Donuts should never factor into the jewquation. Get me a french crueller while you are there.
The excitement a jew goes through when he realizes the power money has over other people.
Jake experienced jewbilation at his barmitzvah when he realized that all the money he received from his grandparent's could be used for all his petty desires.