1 definition by stubby0011

Top Definition
Type of math used when calculating how much an item will cost you out of pocket after using gift cards and trade in of other items. Usually used to justify a new purchase.
I really wanted to buy these new $200 headphones, but I didn't have the cash. So I used my Morrow Math and figured I could trade in my old pair of headphones and use two gift cards I had and then I would only have to pay $20.
by stubby0011 January 29, 2009

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