The worst product you've shipped

“A question I ask in every product interview is, what's the worst product you've ever shipped? And that's because I don't think you're a good PM if you haven't shipped something that's really shitty. You just haven't had enough reps, you haven't done it enough times. And it's not only that you've done it, but that you can admit it and which one it is. That's so important.”