Time in and time out

Posted by ESC January 12, 2009 at 20:57In reply to Time in and time out posted by David on January 12, 2009 at 18:04:

The idiom: Time in and time out (meaning over and over again) What is the origin?

Sounds like a variation of "day in, day out," meaning all day, every day, constantly. Day in, day out was in a "dialect book by W. Carr in 1828 and was widely used by the end of the century." From "Facts on File Dictionary of Cliches," second edition, edited by Christine Ammer, Checkmark Books, New York, 2006. Page 96.