At home she rinses the vegetables in the Colander. The water washes over the vegetables, then down through the holes, and into the drain to head for the water treatment plant. Once the water arrives it is treated and cleansed so that humans can consume the resource again.
You stand in the kitchen talking to her about how unsuitable she is to cook you food and how everything about the two of you is disintegrating. She wonders what you are on about, or if you have lost the plot.
Unable to deal with your talking after many attempts to obtain a resolution, she turns the Colander into a Cullender, places your head in it, and washes water over you until you cool down.
Now that you are her vegetable, all the rubbish flows down through the drain to head for the water treatment plant. Perhaps they can clean up your bullshit.