When um you trying to sleep with someone you tell them about the time you went backpacking in Western Europe or start with asking "did I ever tell you about the time I was backpacking in Western Europe?" Question is normally enough to seduce someone.
R: Did I ever tell you about the time I was backpacking in Western Europe?
The Holiday Armadillo: *starts kissing R*
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J: Years ago when I was backpacking through western Europe I was just outside Barcelona hiking in the foothills of Mount Tibidabo, I was at the end of this path and I came to a clearing, there was a very secluded lake and there were tall trees all around, it was dead silent and across the lake I saw a beautiful woman bathing herself but she was crying...
The holiday armadillo: *seduced* why was she crying?
In reference to the slightly dirty, slightly hippie folk seen walking around urban centers (especially Seattle, New York) carrying extensive camping equipment. If they're locals: what are they carrying in those huge backpacks? Non-locals can safetly be classified as "urban backpackers", transients who don't know that such outdoor activities are better suited for the woods. They hike through city centers, set up camp under bridges, and keep on moving on... on foot.
"No, honey. Don't leave money! Don't you know anything? That's not a homeless person, that's an Ur-ban Back-pack-er. How do I know?! Look at the backpack! Homeless people don't have external framed packs like that! He/she will be insulted if you disturb their park bench nap to give them a $20! They've left their middle-class suburban home to experience the world, not handouts! Don't you know anything about urban backpacking?!"