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, 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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