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2.
An exceedingly bad or unlucky player.
Myriad scrubs are stainz when playing complex games.
by Matt Erwin December 01, 2003
 
1.
To spill tomato ketchup down a colourwear snowboarding jacket.
Hey Brooke, what is that on your cool jacket?
Oh it's my Stainz!
by chrisberry4 March 19, 2013