if you have been to our house in PR, you will notice that almost every cabinet, drawer and cupboard is affixed with a child-lock as below..

This is so that my Ah Ma will not have to search all over the house for all her plates, forks, knives, sugar etc etc.
But on one fine day, Evan showed us his "mighty intelligence" by unlocking the child-lock opening within 3 seconds, without even blinking his eyes and took out the whole container of rock sugar Ah Ma hid inside.
*Duh! What's a child-lock for, when a 2 year old can easily unlock? Thank goodness, Elijah hasn't learnt it yet, phew...*