A severe allergic reaction, usually found on the upper thighs or ass cheeks, brought about by any amount of money ‘burning a hole in your pocket.’ The only known cure is to spend every cent of your Welfare check, Social Security check or Paycheck before midnight on payday – no matter what your financial obligations might be. Purchases generally include such low-rent essentials as cigarettes, lottery tickets, liquor, drugs, new release DVDs or CDs. Expenses such as rent, car payments, insurance, clothing or food are not considered to be essentials and therefore are not factored into the equation.
“Ouch! I gotta buy some cigarettes, DVDs and lottery tickets, quick - before I get a cash rash! I had a lot of overtime this week!”
by Politic Ric May 27, 2010
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A rash that results from a surplus amount of money. Can be due to handling of excess amount of money, acquiring excess money and/or from swimming from a pool of cash.
You: I gotta get me some cream or somethin' im getting paid and gettin' them Money Rash/ Cash Rash.

You: I got so much money im gettin' that Money Rash/ Cash Rash
by under_score July 14, 2010
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