"Samantha, time to get out of the tub! Come on, hop on out please."
"Sam, out. Now."
*sigh* "Mermaid, time to get out."
"Oh! Yes, I am a mermaid. Say 'hi mermaid' mommy! I need to dry my tail!"
Over the next few minutes she transformed back and forth from girl to mermaid to a cat to a cat-mermaid.
I wonder if this could work on my students...