I was trading with my friend who was new to the series at the time when he showed me a pokemon he'd never trade. He had a shiny shiny Minun, he thought it looked cool. Me being a jealous bastard who has played pokemon for years and never encountered a shiny told him that the different colors means that its a weaker version and that it wont do good in battle. I told him I'd trade him a stronger pokemon for it, Which i did! I gave him a fair trade! Sorta...anyway, I took the shiny off his hands. A couple months later he found out and got mad at me. Oh how I loved that Minun.