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1.
When a year has a short spring and summer, it becomes condensed and is called a spummer.
We got ripped off this year, there was no full spring or summer. It was a condensed spummer.
by checkitoutnow August 27, 2009
 
2.
Someone who is consistently lame or flaky.
My boyfriend blew off our date to hang out with his mom again. He's such a spummer.
by 3008-3007 September 04, 2008