650pm, kid's table, our house:
Emmy opens Chick Fil A cup full of lemonade.
Emmy: There are french fries in my lemon-lade
Me: Let me see. (peeks inside not knowing what may be hiding in there). Oh, that is backwash.
Emmy: Who put that backwash in my cup?
Me: Well honey, backwash happens when you take a drink but you aren't finished chewing your food. So I guess it was you that put that backwash in your cup.