Frank J. Wilstach, comp. A Dictionary of Similes. 1916.
New friends, like ones best coat and patent-leather boots, are only intended for holiday wear. At other times they are neither serviceable nor comfortable; they do not answer the required purposes, are ill adapted to give us the ease we seek. A new coat, however, has this advantage, that in time it will become old and comfortable; so much can by no means be predicted with certainty of a new friend.