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A sum of money set apart for discretionary and/or undocumented spending, often fraudulent, illegal, or dishonest.
News Junkie: Our governments is widely known for unaccountable slush funds built up to funnel money to their friends.
Innocent Kid: Are you serious? I've never heard about that. How this could ever happen?
by humblepiece June 02, 2017
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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A secret stash of money usally used for the most part in emergencies only.
I used my locker to hold my slush fund not my books.
by Mic February 09, 2004
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Refers to the "reserve" of half-melted snow that Calvin keeps handy for making into sloppy "cannon balls" to lob at Susie anytime he catches sight of her during the winter months.
Susie feels confident about venturing outside only after the snow has disappeared in the Spring, when she can be sure that Calvin's slush fund will be completely melted.
by QuacksO March 07, 2019
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