I've found that carrying around Pam zerbie's copy of The More than Complete Hitchhiker's Guide is a great way to get random strangers to start conversations with you. It's also good to read. I've finished the titular book and have moved on to The Restaurant at the End of the Universe...which means that today, years later, I finally understand what Chris underwhelm was referencing that time when he wrote, "Your parents are so cool you could keep a side of meat in them for a month. They're so hip they have difficulty seeing over their pelvises."
My long monument to cultural ignorance is collapsing in a sudden pile of hey, that was a Wilco lyric! and hey, that's a Douglas Adams quotation!
Tear down the wall.