Eugene’s an a-hole. Abraham’s backstory is as messy as a parking lot of water-soaked walkers. And toilet water is cool to drink in a pinch. We learned all this and more in the latest episode of The Walking Dead. But let’s start with Abraham because he’s important in this entire equation. In this episode, we learned that Abraham’s family fled after the zombie apocalypse brought out his violent side. (Or, one could wonder, maybe he was a violent person all along.