Say it three times fast

Got my allergy shots this afternoon. Had to drag the girls along. On the way home, Rebekah asked, "How many shots do you get?"M : "Four. Mites, grass, mold, cats."H: "Mice, grats, mold, casts?"R: "Mice, grats, mold, what are casts?"Me: "Mites, not mice. Mites. Dust mites. And cats."R: "What are grats?"Me: "Grass! Grass!"Then they started trying to say "Mites, grass, mold, cats" very very fast. Which usually came out "Mice, grats, mold, casts."