We're in Milan. We're not happy. We're waiting for a bus that doesn't seem to come. Then we see this:
Three different sized sheets of bubble wrap, sized for how long you expect to wait: a little square for three minutes, bigger for five minutes, biggest for 10 — and the sign on top says: "Antistress For Free!!"
Everyone knows what to do. First, you calculate.
Then you choose.
Then you forget all about the bus and spend the time happily popping polyethylene-wrapped air bubbles.