The last time my mind was this blown by a piece of video game trivia, I had just learned that clouds and bushes in Super Mario Bros. were the same sprite, only recolored and masked with clever placement.
As pointed out by Supper Mario Broth, you can take out Big Boos in Super Mario World by sliding down stairs. The same trick, courtesy of NeoGAF, also works on those green Ghost House bubbles. And if there aren't any stairs nearby, you could alternatively land a well-timed cape slide instead.
via destructoid http://ift.tt/2j2aIra