In week three of the new season of Joan & Melissa: Joan Knows Best? — Saturday at 9 pm ET on WEtv — we finally get to see how the infamous book banning incident went down. If you’re not sure what we’re talking about, we’ll break it down: In August of last year, Rivers made headlines when she and her crew descended upon a Costco in Burbank, CA to not-so-silently protest the national chain’s banning of her latest book I Hate Everyone … Starting With Me because it contained profanity. In typical fashion, Rivers took matters into her own hands and, naturally, pushed way too far. Check out the preview below!