The girls each have their bathtime water "thing."
Quinn gets herself into a splashing frenzy, slapping the water until her head is soaked and she's sputtering. Celeste things this is a riot. The first time it happened, Celeste pointed and said (with volume): "She making hot water!" And ever since then the Quinn splash-o-rama has been dubbed "hot water" ... and now it sounds like Quinn is trying to say "hot water" whenever she's about to start splashing.
Celeste, who usually gets to enjoy some solo bathtub time after Quinn gets out each night, has taken to lingering while the water drains out of the tub. One time she did this, I told her how the water flowed down the drain, through the pipes in our wall, out to the sewer under the street where it was carried to the water treatment facility and cleaned before being discharged back into the environment where it goes back into creeks and streams that make their way into rivers that feed the Chesapeake Bay from where it flows into the Atlantic Ocean. I also told her that all along the way, sun and wind act upon the water, causing evaporation, which makes water droplets go up into the sky where they condense into clouds and eventually cause rain and snow, which comes back to earth to recharge snowcaps and aquifers and fill rivers and lakes and reservoirs, which are eventually tapped by the water company to fill the pipe under our street that connects to the pipe in our house, which then fills Celeste's bathtub!
Now, pretty much every night, as the water drains, Celeste says: "Daddy, say those words again!" as she pulls the plug.