"It" is a part of the Passover seder that is called the 4 questions. They are asked by the youngest child (person) at the seder and henceforth, the story of Passover is told through the answers to the questions. The way Trek phrased her original comment she used the the language and intonation of the real questions; i.e Why is this night different from all other nights? and Why do we eat reclining on pillows this night when we eat sitting up on all other nights?
FYI
I also do not do the total cleaning out, etc before the holiday, but as it often coincides with the beginning of the good cycling weather, I will use that as an excuse, not the fact that I just never do it.

Robyn