Ghost Yoshi (variation on get two of one item)
From Glitches
From the game Super Mario World for the Super Nintendo
Use the get Get two of one item glitch under a block that holds a Yoshi. Yoshi will pop out jitterishly and you will here two Yoshi noises. When you jump on Yoshi, you will hear two Yoshi-getting-on noises. Now, on the visible Yoshi, walk somewhere and hop off. Jump over to where Yoshi used to be. You will land on an invisble Yoshi (you should hear the Yoshi-boarding noise). Mario will look like he's walking around normally and the music will still be the same. But, if you push A you will jump up really high. And, if you stand on a block (like the ? blocks or the information blocks), pushing A will often make you warp under them. You have to get back on the invisible Yoshi after pushing A, though. He can be found back in his original Yoshi-sprouting spot or where you left him but he's often by the visible Yoshi.
We've tried this glitch so far in Yoshi's Island 2 and Chocolate Island 5. In Yoshi's Island, use a koopa shell and the p-switch at the end of the level. There are two yoshi places in the level, so you can experiment a bit. In Chocolate Island, you should use the p-switch by the square of blocks and the koopa shell by the areas of water further in the level. The Yoshi is in the ? block at the top of the square by the p-switch. Be sure not to hit the switch and kill yourself... And, jumping off the invisible Yoshi by the squared-in spinys can be sometimes dangerous because you sometimes slip through the blocks and get hit by them. Experiment and have fun.
Submitted by: kornyhatemachine and Connie.
A Youtube video of the glitch can be seen here.