water displacement

every morning at work i am reminded of science class. we have this coffee maker that holds one pot of water to heat it up and then when you pour another pot it, it 'displaces' that pot and fills with the room temperature water to heat, for the next pot. every time i pour the new pot of water in and the hot water comes out and fills the glass pitcher i think to myself 'water displacement'.

a e i o u and . . .

sometimes y

when not y?