Debroy, who was scheduled to speak at the inaugural session, excused himself saying he would not mind being "rude" and "disappear instantly without waiting for the vote of thanks".
The country's prestigious institute, Indian Institute of Foreign Trade (IIFT), had invited him to speak on 'India's Trade Deficit with Major Trading Partners: Lessons and Prospects' at its campus here.
When his turn came to speak, he said: "I was schedule to leave at quarter to 11 at 10.45 am. So I have way passed that limit, so therefore I shall be rude and disappear instantly without waiting for the vote of thanks after having thanked IIFT for inviting me here.
To the disappointment of the faculty members and students, he spoke for less than two minutes.