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noun. Short for Seniors With Second/Seventh Period Off. A group of students who throw parties in school hallways involving candy, party favors, and colorful art projects. May or may not include school administration. SWSPO is native to mohi. Also adjective for Crazy/Awesome
I was on my way to math when I saw the SWSPO officers caroling in the hallway and playing with kazoos.

This party is totally SWSPO!
by Gessie April 25, 2005
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