Who laughed at Duryodhan at Indraprasth ?

In the Mahabharata, during the Pandavas' Rajasuya Yagna at Indraprastha, when Duryodhan visited the magnificent palace built by Maya, he became confused by illusions and fell into a pool. Draupadi (also known as Panchali) laughed at him and mocked him saying 'the blind son of a blind man.' This humiliation was one of the key triggers for the Mahabharata war.