Look into my eyes

You are feeling very sleepy. Your mind is blank. You will do whatever you are told. Now go into the kitchen and get some cat biscuits. Bring them to me. You will feed me cat biscuits one at a time until I tell you to stop, then you will destroy the evidence and go to bed.

Tomorrow you will remember none of this. But you will feel an irresistible urge to buy more cat food. Give in to this urge. Also buy tinned tuna and cat milk ...