from Scott Adams' Dilbert Newsletter...SO true.

Is there an Induhvidual in your house who doesn't understand that
when you're using a sink you can't hear conversation directed at
you from another room? If so, try this little speech.

My Running-Water Speech:

"I can hear a vague buzzing sound that I believe is you, trying to
talk to me from another room while I am using the sink. Believe it
or not, the physics of sound have not changed that much since the
last fifty times you tried unsuccessfully to yak at me from another
room while I was using the sink. Tomorrow, when you try again, I
will still not be able to hear you over the sound of running water
in the sink."