slang To buy something that ultimately proves to be worth nothing or less than promised. Primarily heard in UK. I'm sorry, but that's definitely not an authentic Louis Vuitton bag. You've bought a pup, my friend. He told us he has years of experience in this field when we hired him, but he acts like this is his first time handling accounts like this. I'm starting to think we bought a pup.

To sell or pass off something to one that ultimately proves to be worth nothing or less than promised. I'm sorry, but that's definitely not an authentic Louis Vuitton bag. They sold you a pup, my friend. He told us he has years of experience in this field when we hired him, but he acts like this is his first time handling accounts like this. I'm starting to think he sold us a pup.