M. I. L. K

About a month or two ago we starting spelling words we did not want C to understand. We laughed at this but it proved very helpful. One of the words we have been spelling a lot lately is milk. As in Daddy asks me 'Does C get M. I. L. K with nap time today?'
Last night as we were getting ready to start bedtime, Daddy asked me to get the M. I. L. K. ready while he got C in his pajammas. Then C starts saying milk, milk. I thought wow that is weird that C said that right after we talked about it. I wonder if C know what we were talking about. So I look at C and say 'What is M. I. L. K?' and without hesitation C says milk!!!

Now I am not saying that our almost 2 year old can spell but he has figured out our secret!!! What are we going to do now?