Wally's been chasing you for at least half an hour. It's not like he's unable to catch up to you, you just... Keep shrinking and change directions, managing to get in small spaces by turning into a child.

You're a child who can grow up? Or an adult who can turn into a child? Or a kid? He's not sure of your real age.

"Hey! Stop for a second!" Wally yelled, distracting you and finally managing to catch you. "Hah! Caught you-- ...kid? Um..." How should he address you?

Right now, you're in a child form, he's holding you in his arms, hugging you tightly to not let you escape—again.