So I almost just got arrested...

I love Europe, but its authorities seem to hate me.
Granted, this time I was in the wrong; I knew exactly what I was doing.
So, last night was a late one in Barcelona, and I "crashed" [by crashed I meant hung out for a few hours] at a friend's flat. At about 10:30AM, I figured it was time to head back, as it would take me about 15-20 minutes to walk to the train station, then an hour train ride, and a 20 minute walk back to Dave's place in Sabadell.
The thing is, they have a metro/overground/bus transit system, and you can buy a t10[ten pass] card which is valid for travel within one zone, but it can be any one zone you want. Barcelona to Sabadell is two zones.
I was lucky enough to have one trip left on my t-10, because i had less than a euro in change, no bank card; I had nothing but my California id.
Anyways, the station that I get off at in Sabadell, you don't need to swipe your pass again to get out the gate, so basically you can pay half price for the train ticket and they won't know.
BAD KARI.
I should have known better.
When I got off the train at 11:30, there were PEOPLE CHECKING.
And I thought, "play it cool, just smile, maybe he's not looking that carefully at the tickets."
Yes, I was thinking this in my definite walk of shame attire.
So he checks my ticket, I smiled, and he said in Spanish, "Your ticket is bad. It's only for one zone."
Now this is where you play the stupid American tourist, who only speaks English, because most people just don't want to deal with the language barrier and let you go.
Me: "What?"
Him, in Spanish: "Your ticket is BAD"
Me: "I'm sorry, I only speak English. I don't understand you."
Him, still in Spanish, but slower: "English? Your ticket.....is bad......"
Me: "Why?"
Still in Spanish: "You need TWO zones. This is for one."
Me: "Okay, so what's the price difference?"
Him, in English: "Right now? 20 euros."
SHIT.
Me: "I don't have any money [opened my wallet]. This is what I have. I can call my friend who has all my money, but it will be awhile before he gets here."
Him: "Vale, vale."
Me: "My phone doesn't work down here."
Him, pointing at my full service: "That's good."
Me: No, it doesn't work."
Him:" Do you have a passport?"
Me: "not on me."
Him: "You don't have a passport, you don't have money, you have a bad ticket, what are you doing?"
Me: "I went out last night in Barcelona, and my friend has everything. My money, my passport."
Him: "I'm going to have to call the Police."
Me: "No, no, how about you come with me, outside the station where I have service, and wait with me while I call my friend?" [repeated that twice in very slow English].
Him: "Vale, vale."
He started to follow me up the stairs, tugged my arm, and I looked back at him.
Him, with a smile: "Goodbye. Go."

SOOOO LUCKY.
I got my one free pass, for the stupid American tourist. From now on I'll cough up a few extra euros for the right ticket.
Phew!
Oh, and it started raining as soon as I left the station for my 20 minute walk home.