- Once convinced you are, in fact, obligated to hide, the necessity of hiding in such a way that they can't see you. Standing in the middle of the room with your eyes covered does not cut it. Putting your head under the blankets is slightly better, but still runs into the age-old conundrum of "I can see your butt."
- Once you have found a hiding place that conceals the majority of your body parts, remembering that your opponent can also hear. Cheerful monologues on where you have hidden are discouraged. Responding to rhetorical questions like "where's Ellie?" with "Here I am! Hiding behind the couch!" is also a bad strategy. Giggling, ok, we can probably manage selective deafness with regards to giggling.
- When it is your turn to seek, it is considered bad form to follow the other person around so you can see where they're going to hide.
- Sometimes people are better at this game than you, particularly if they are older, and have a grasp on points 1-3. This does not mean they have left the house, just that you can't find them. The accepted response is to call "Ally-ally-in-come-free" or even just "I give up, where are you?", not hyperventilate yourself into silent hysterics before they realize something's wrong and come out.*
- On subsequent rounds, hiding in the same spot every time is not very effective. Hiding in the spot where you just found the other person also contains a certain logical fallacy.
- In summary: the entire game.
She still insists we play it all the time, though. I blame Sesame Street.
* My mother insists she was just trying to demonstrate the effectiveness of points 1-3. The rest of us think she maybe takes winning games of hide-and-seek with a three year old a little seriously.