tagged with: perpetual waterfall, waterfall, perpetual, optics, illusory, illusions, optical illusion, perspective, drawing, geek, humor, attitude, physics, psyche, psychology, psychologist, visual, wordsunwords, wordsandunwords, brain teaser, words and unwords, riddles, brain teasers
Ever saw a perpetual waterfall? Showcase illusory illusions with any of these optical illusion gifts featuring a perpetual waterfall -- whether the water always flows upward and comes down. Deny the law of physics and make others do a double-take with any of these vivid optical illusion gifts today!
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