Mahabharata war begins!!

Duryodana

Once Dharmaputra performed Rajasuya yagna in his capital-town Indraprasta. Many rishis and kings took part in the yagna. The entire town wore a festive look. Bhima was in charge of the kitchen. Duryodana took care of money-matters[gajana]. The puja was taken care of by Sahadeva while Nakula was responsible for collecting funds. Arjuna rendered service to the Guru and Lord Krishna was engaged in sadhu-seva. Draupadi was in charge of the dining area. Karna gave 'dhaanam' in the yagna. With each person performing his duty perfectly, the yagna came to a grand close.

After the yagna, while the others left, Lord Krishna and Duryodana stayed back. Duryodana and Krishna stayed in Dharmaputra's palace for a few days. The grandeur of the palace made Duryodana jealous. A wizard by name Mayan had constructed that palace. Even the palaces of the Devas were no match to it. The pillars were made of diamond and the walls of gold. There were innumerable spacious rooms. The palace had many astounding magical features. In some places the marble surface of the floor appeared like water while in some place the water filled ground appeared like marble surface.

One day, while on a stroll around the palace, Duryodana mistook a marble surface for water and stepped on it carefully. In another place, fooled by the floor-like illusion, he fell into water. Draupadi, who witnessed this laughed at him. Greatly insulted, Duryodana swore to take revenge on her. He defeated Dharmaputra in a game of ludo and used the opportunity to avenge the insult thrown at him by Draupadi. The end result was the great Mahabharata war.

The moral of the story is DO NOT HAVE FUN AT OTHERS' EXPENSE.