Don't Move, Mario!

[Glitchy]

And I wonder if Yoshis can actually eat hotheads?.

That's a good question. I think hotheads only appear in castles and fortresses, so it's a mystery.

[Turtlekid1]

If that guy is using the actual Mario engine, maybe they can.  Maybe a non-fortress/castle level with hotheads was in the game at one point, and Yoshis could actually eat hotheads; and when the level was removed, they forgot/were too lazy to remove that bit of programming.  Of course, that's all just a theory.

[Bag of Magic Food]

I heard the story theme from Final Fantasy 1!