Child anecdote (can correct it please? :-) ) When I was little in the evenings I used to go to my grandmother's house and I took the opportunity to do all the things my mother would not let me do, like playing video games in the game boy, eating chocolate ice cream at snack... One of these afternoons playing with my cousin three years older than me, I locked myself in a closet bathroom to give a scare to my grandmother. The problem is that after I did not know out was there and locked out for half an hour waiting for my cousin or my grandmother will remember me.