I'm sure Yoshi wouldn't mind carrying two. Just this once.
This is what happens when Yoshi gets the powerup.
At first it may not seem like it makes sense, but they both went to college in Yoshi Island.
He'll be fine as long as no one hits him with a turtle shell.
Great, now we can't go to the party at the Haunted House.
Yoshi had to be in therapy for months after they rode him.