When you are playing in a gambling enviroment ex. Casino,Racetrack,Bookie etc.. And you are in the black and feeling good. You tend to play on with an attitude that if you lose it is not your $ but the house instead.
My man I just scored today with the Colts for $500. I got now spending money my man. I am playing with the house money now. Yea I can bet $100 more on something else and if I win I win more, if I lose I am only losing with the HOUSE MONEY. No big deal.