I've done a few amusing things to get me some free interwebz. My favourite would have to be messing with a pay phone enough so that it would let me use a dial up account.

used to sneak out late at night. ( I was only a teenager and didn't have internet connection at parents house).
with my trusty p2 laptop that took near 5minutes to boot up and a further 5minutes to establish an dial up connection and at least 1 1/2 minutes to load up the browser.