When Rav Yitzchok of Radvil zy’a was a young man, he lived in the city of Nadvorna. One year, when he was ready to start his Seder, he told his shamash to bring him water from the well for netilas yadayim. A long time passed, but the attendant failed to come back with the water. The Rebbe sent his Rebitzen to see what was taking so long, but she also failed to return. Finally, he went himself to see what was going on.
When he got outside, he saw a large crowd peering into the window of a home. They were looking at a Jewish man and listening to how he recited the Hagadah. He saw his shamash and wife amongst the crowd, and he too walked over to see what was so interesting. He saw that the man was reciting one page of the Hagadah and then one page from Megilas Eicha. He continued doing this, page by page, and the crowd was watching this and laughing at how funny it was.
The real story was that this man had given his Hagadah to a bookbinder, whom he asked to bind it for him. He also brought his copy of Kinos and Megilas Eicha to the bookbinder at the same time. The binder made a mistake and mixed up the pages, binding every other page from the Hagadah together with every other page from the Kinos. This unlearned Jew didn’t know what the words meant in any case, so he hadn’t realized that anything was amiss.
The Rebbe later said that the entire Pamalia Shel Maaloh had come down to hear this Jew recite the Hagadah with temimus. That is why everyone was so captured by it and were unable to stop watching. There neshamos felt the kedusha and they were unable to walk away.