A professor was lecturing in a seminar. He was speaking so excitedly by raising his hands repeatedly that his pants got raised by the upward movement of his belly. People sitting in audience could clearly see his socks which were red in one shoe and blue in the other . No body said anything, only a few smiled.
Later his friend told him about this mismatch. The professor at once told," yaar mein subah se khud hairan hoon, ghar mein bilkul aisa hi ek joda aur pada hai"