"Aren't you a bit big to fit in my pouch." you say, removing what's left of your clothes.
"That's soon remedied" says Joey, as he removes most of his clothing. Then he takes a drink from the fountain too, and also starts transforming - but instead of becoming a female kangaroo, he keeps his gender and shrinks to his namesake, a joey!
"Now you have to give me a ride!" says Joey "Otherwise you won't turn back!"