Today I was going through the SMW glithes and tried to do Double Yoshi. It worked fine. Then I thought I could get a 2-UP if I had a Yoshi already. So I tried it and it worked! It doesn't seem to be on the list there. Don't give me credit. I bet people already know this.
If birds breathed fire everytime they posted, the forum would''ve blow''d up by now.