You mash wash?

I thought I'd treat you to a tidbit of family conversation:

Will - "Wash gone? Wash gone?"
Me - "Will I don't understand the words you are saying?"
Will - "Wash gone?  Wash gone?"
Me - "Oh, you mean the wasp is gone?"
Will - "Yes"  (after a closer look, I guess it wasn't gone, because a few minutes later the conversation continues.)
Will to Elise - "You mash wash?"
Elise - "No, I would never do that!"
Will, picks up my flip flop that I had used minutes before to smash a spider with - "You mash Mom's shoe.  You mash wash please?"
Elise - "No, I wouldn't do that, and your mom and dad won't either"
Will - "Me mash wash?"
Elise - I didn't hear her response, but I'm sure it was something discouraging his getting anywhere near a wasp.
Will - "You scare wash away?"
Elise - "No, I'm not getting anywhere near that wasp."
Will - "Fine."
Elise - "I don't see the wasp anymore, I think it is safe to go outside now.  Go ahead, I'm right behind you."  (as she gently pushes him first out the door).