If we put our finger in your mouth, and you start sucking it, you are definitely hungry.

If we want to put you into sleep, and you cry outloud, you are either very sleepy, or not sleepy. So, if we put you in your activity saucer (or take you out of the house, at the door) and you start laughing and goggling, you are not sleepy. If you keep on shouting and yelling or nagging, you are sleepy.

If you fold your legs in your tommy and cry outloud, it is your tommy! Thanks god now all tommy pain is behind us.

and, you might be cold or warm, you might be bored, or, you might react to a new place or a stranger new person. You rarely cry if you poo or pee!

If you have burp, and we try to feed you, you shout outloud!

If you want to turn (from your back to your tommy) and we do not let you, you shout.