There is a superhero living in my house, one you may not have heard of: her special power is her VERY LOUD voice, which enables her to split eardrums and crack nerves at over 50 paces.
Loud-girl's voice varies in tone and decibel level (starting at loud and moving all the way up to I-can't-take-it-anymore-loud). "Throttle it down," we tell her as the noise level escalates. She complies for about 30 seconds, then her voice rebounds.
On the playground, she is the only child whose voice you can clearly make out above the others. At an indoor playspace, with literally hundreds of kids screaming, she is easily heard. Playing alone in her room, she sings as if she's on Broadway. Out in the backyard, she is loud enough for every neighbor in a 2-block radius to make out her complaints. Out shopping or in a restaurant, her voice carries easily to strangers as she proclaims "That little girl is drinking soda" or "I saw that lady picking her nose."
Loud-girl is immune to other loud noises. I have turned the radio and the TV up full-blast to get her attention; still she carried on in her own loud world. She occasionally responds to other ear-splitting outbursts (me shrieking "Quiet down!" like an insane person, for example), but only as a 'break.' She stops...and then she reboots, with the vocal system right back at full power in short order.
For the ultimate break, there is one way for sure to quiet her down: take her over to a friend's house. She is suddenly "Silent Sue," barely capable of mumbling her name and age when asked. This ploy works for 30 solid minutes of peace, after which she whispers "Can we go home now?"
So we do, and she turns from her mild-mannered self to the all-powerful Loud-Girl, just like magic.