I don't get mad

I walked in the bathroom where Emily and Gavin were bathing together and Emily hurried and hid something behind her back.  I asked what she was hiding, and she showed me a handful of my foaming hand soap.  I tried to explain to her that it's important never to hide anything from me and that "I don't get mad at things like that".  Gavin responded "Oh, ya.  It's Dad that gets mad at things like that."