1 definition by NighthawkPOA

Another word for the weekend. Derived from the first two letters of each day of the weekend, SAturday and SUnday.
Person 1: Hey man, what are you doing this sasu?

Person 2: Dude, I don't really know. I have no class so lets PARTY!
Person 1: Sounds like a plan, I love the sasu!
by NighthawkPOA December 3, 2009
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