Everybody's talkin' about the good old days. Eeeeverybody, "The Good Old Days."

My understanding is that Marcellus was on the stakeout in Butch's apartment with Vincent, and it WAS unusual for the boss to be there— but he had to be because Jules had quit the previous day. But Marcellus and Vincent had their guard down because, as you mentioned, they had every reason to believe Butch had already…

The Mountain Goats made a great album about West Texas (maybe you already know and are yanking my chain?)