Originally a mathematical term, it is used in any conversation on any topic. It is used when referring to something which has been said or done for many more times than one cares to remember.
Princi to students at the assembly, " I have told you useless fellows n number of times that no one should be fagging in the toilet! The sweeper has told me he saw some boys fagging during 1st period yesterday! Once i catch the persons doing this, they will have to kneeldown for the whole bleddy year!!!
Added 2011-08-22 by Mildly Racist