सिर खपाना मतलब - ऐसा काम या बात करना जिससे कोई लाभ न हो और व्यर्थ मस्तिष्क थक जाए।
Here is meaning of Sir Khapana in hindi. Get definition and hindi meaning of Sir Khapana. What is Hindi definition and meaning of Sir Khapana ? (hindi matlab - arth kya hai?).