Me: Dang Gretel, your breath smells horrible.
K (backseat): Oh, Gretel just farted in my face.
B (frontseat): I think my breath smells too. What can I do to make it stop smelling?
Me: Brush your teeth.
B: I have been!
Me: You need mint tic tacs.
B: But I only like the orange ones.
Me: Maybe you and Gretel have halitosis.
K and B: What's that?
Me: It's a disease where you have bad breath. You know, it has the word "toe" in it for a reason.
Yeah, that gave them something to think about for the rest of the day....