I mentioned the word 'poor', right?
I haven't had work since August 20th (when I parted ways with the JREF). I've since sold possessions on eBay, gotten some help from friends, and have enough money to last (with luck) through January.
So I guess the answer to the question is - well, I'm going to have an issue if the cost of air fare is greater than, say, $5. Also, from what I hear about TSA lately, they REALLY wouldn't appreciate a stowaway.
Here's another fun one to throw into the mix, and I'm not sure whether or not it's in violation of the MA to admit to having done such a thing, so I apologize in advance if it is.
I purchased antibiotics from a drug dealer in town quite recently - because my throat had been hurting for days, and it was cheaper to go to a drug dealer than a doctor. While you can find the occasional free clinic in this country, the wait in one of those can be roughly categorized as "forever", and they're packed. If you weren't all that sick BEFORE walking into one, you will be by the time you walk out.
I do not, by the way, recommend that anyone else try that avenue.