Laura and Lena went on an errand recently.  Lena brought along her imaginary crocodile friends.

When they got home, Laura asked,

Where are your crocodiles?

Lena said,

They’re out killing bad crocodiles.

Laura, a little surprised at her response, said,

Maybe they’re just telling them not to be bad.

Impassively Lena replies,

No, they’re killing them.

Keep your eyes out for these vigilantes.