‘You’re an insane, degenerate piece of filth, and you deserve to die.’

Season 2, Episode 2
Remember the days when Walt was clearly a better human being than his meth peers? We couldn't help but cheer for him when he put Tuco in his place: "We tried to poison you. We tried to poison you because you’re an insane, degenerate piece of filth, and you deserve to die." It was an incredibly ballsy thing to say, considering Tuco had an automatic weapon in his hands. The line was designed to throw Tuco off his game, and it worked, allowing Jesse enough time to hit him in the head with rock.