Odds and ends Of the first magnitude Off the beaten path Off the beaten track Oil and water Old as the hills Old coot Old enough to be her father Old enough to know better Old hat On the ball On the QT On the spur of the moment On the tip of your tongue On the wagon On the warpath On your last legs Once and for all Once bitten, twice shy Once in a blue moon One foot in the grave One for the road One good turn deserves another One in a million One of these days One of those things One piece at a time One that got away, The Only time will tell Only too pleased Open a can of worms Open sesame Open the door to new accounts Open the door to success Open the floodgates Our clients speak louder than words Our customers are number one with us! Our secret of success Our specialty is quality Out of the blue Out of the mouths of babes Out of this world Out on a limb Over a barrel Over and done with Over and out Over my dead body Over the top Own worst enemy