my side?

Gracie and I were watching Wizard of Oz for the 25th time this week, when I told her I had a boo-boo. She checked it out and we talked about how I had to put medicine on it earlier to make it feel better. She asked me what kind of medicine to which I replied, "Peroxide." She then asked me, "Why didn't you use my side?" It sounded to her like I said perox side! She is too cute! I could not stop laughing for a good while!