Egg Roll
Egg Roll is a special move used by Yoshi. It is a smash B move. The exectuor can steer it by pressing left or right, and stop the attack by pressing B again. It can tecnically be used as a third jump, but gets almost no distance at all. It is easily countered, but acts as an efficient way to pass an edgeguarder (when Yoshi is off-stage), but if the opponent can reach the egg's height and hit Yoshi it is essentially followed by a death.
In Brawl, Yoshi's egg roll has higher priority.
The move seems to be unique to the Super Smash Bros. series, but may be based off of Yoshi's Story where upon eating a Turbo Tulip, Yoshi could encase himself into an egg and fling himself at enemies. A Similar technique would later appear in Mario Power Tennis and Mario Strikers Charged.