The thing about this glitch is that it's not so exciting, but it's very useful. It lets you bring items up vines... and that can be cool. Items you can bring up include P-switches, shells, springs... basically anything you can throw upwards. Go under the vine and throw the item upwards (push up and then Y). Now, before it falls back down, hold Y and climb the vine. The item should land on Mario and disappear, but it's still there. Continue to hold Y and if done properly, when you jump on the vine, you will be holding the item.
Submitted by: Connie