No, Just Dandi isn't Just Dandy's trashy cousin. It's what happens when Y is on call all night and just D and Y becomes just D and Ike. Spoiler alert: it takes place entirely on the couch and involves really ugly socks.
I'm a little over 100 pages in to this book, but it's on track to become one of my favorites. Similar sentiments toward the pumpkin ice cream.