Another thing you may not have done is just wander around in Sanctuary and talk to people. They have quite a bit to say if you keep talking to them and some of them are quite amusing or are references to other things, or are just plain weird for the sake of being weird. You will need to save and quit or just leave and return to find them all as they don’t all show up at once. Here’s a small sample …
So as you can see there are heaps of things people have to say and they all have several lines of dialog if you keep clicking on them and cycle through them all
They mostly seem to have a theme and i guess i could have given her the “foreigner” tag instead of random. They’re all worth taking the time to chat with if you haven’t done so yet i think. I also remember @hattieinduni mentioning one in Moxxi’s bar that i’ll try to find unless Hattie can inform us herself.