איך יעקב התחתן עם שתי אחיות?

Why is matzah called lechem oni? It is taught: Lechem oni – because you answer with many words. Oni has the same root as the word oneh, to answer or respond. Explanation: the reading of the Haggadah and the recitation of Hallel over the eating of the meal.
Another Interpretation: Just as it is the practice of a poor man to eat only part of a loaf so too we recite this declaration over a broken piece of matzah.
Explanation: We recite the Motzi over a broken piece of matzah as we shall explain…
Another Interpretation. Just as a poor person kneads the dough and his wife bakes it, so too, it is the custom for one person to knead the dough and another to bake it (in order to finish within the prescribed time.)
Explanation: Since the poor person has no one to help him, he makes bread along with his spouse, so on Passover it is customary for even the rich person to do so before Passover so that the dough does not become chametz.
There are those who explain it differently: Why is matzah called lechem oni? Since it is baked according to the measure of the sacrifice which was offered by a poor person which is an Omer or one tenth of an eyfah as it is explained in Leviticus 5:11. This is the offering of the poorest of the poor.