damaged goods - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A person, especially an unmarried woman who is no longer a virgin, as in A person who has sex before marriage is not considered damaged goods in this day and age. This pejorative expression transfers the reduced value of materials (stock, provisions, etc.) marred in some way to women who have had a sexual experience. [Early 1900s]