Super Mario World - Glitch - How To Ride Yoshi While Holding A Key

How to do; Have the key right beside Yoshi (how it is here). Jump on Yoshi. If you just jump on him,you will just go on Yoshi,standing on the key.To hold the key,jump on Yoshi,and RIGHT WHEN YOU JUMP ON HIM,hold Y/X (for PC,A/S). If done correctly,you will be holding the key,and riding Yoshi. If you let go of Y/X (A/S),you will drop the key,so be careful.