I've made a huge mistake

The below expression made me think that Iggy had realized he'd made a huge mistake. No.

I was the mistaken one. When I tried to take him out of the tub and undress him, he screamed and gestured toward the now empty tub (he climbed in while it was draining.) He showed me the fish on his shirt and pointed at the tap. Yes. He wanted to take his fish for a swim. I refilled the tub and watched as he laid down on his belly and wiggled around.

Now I have the feeling I'll be spending the day keeping him out of the street, as he'll be wanting to take his fresh shirt for a drive.