Photo: iStockphoto
I was in California the other day and saw someone doing something that I haven’t seen done in a good while. I used to do it myself quite a bit, when I was in college, largely out of necessity.
What was it?
A piece of Freakonomics swag to the first correct guess.
Addendum: The answer to the nostalgia contest question is provided here.
and 
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Selling Cans
Hitch a ride
Talk on a public phone?
Using a payphone?
Using a slide rule?
Donating plasma for cash?
Cooking on a hot plate?
Stealing toilet paper out of the public bathroom for your dorm room?
Hitchhiking?
Walking in LA?
Return bottles for cash.
Don’t be silly, Jeff. Nobody walks in LA.
Read a book?
Collecting cans and/or bottles for cash?