If your neighbor was one of those people that practically begged for a flaming pile of shit on their doorstep, again you could resort to the outdoor phone box to make their life a living hell, at least until they called a tech out to figure out what the hell was wrong with their phone.
There are two pin connectors in a standard phone box. A green and a red. Known by me simply as "The Christmas Connectors". These are what I would hook up my respective lineman's handset wires to if I was going to make calls. Alternately, you could bridge these two connectors with a paperclip or other metal object to put the line in a loop (use gloves if you're going to try this or you might get a little surprise).
The people inside would have no dial tone and people trying to call the house would simply get a busy signal. A good time to do this was Friday night because normally a tech wouldn't be available until the following Monday. This was great for people who had a second phone line for their internet because they wouldn't be able to tell that there was no dial tone without actually hooking up a phone to the line.
Normally this only worked the first time because the tech would explain to the people that someone was foxing around inside their phone box. If you wanted to be nasty neighbor of the year, you could dial 911 and watch from a safe distance as the police showed up to their house to investigate why they kept calling 911 and hanging up.
As time went on and computers started becoming more and more common, instead of hooking up a beige box, you could connect your laptop in the same manner using a stripped phone cord and the same alligator clip setup. This was great for dialing into long distance bulletin board systems or wardialing outside of your local coverage area. Nothing like scanning an entire prefix for loop lines and modems at absolutely no charge to you.
Everywhere had modems back then and a huge amount of them had absolutely no password for login. There was the Pearl Vision down the road that I could make up false orders for spectacles, some local air pollution regulatory site, and even the Barta Bus Terminal. I will say that at least the Barta Bus Terminal had a password, but it was the default password for the 3Com Hiper Arc System that they were running. I never screwed with the bus routes or anything but i'm fairly sure I could have made just about everybody in town late for work if I was so inclined.
As the years passed, less and less people relied on using a land line and the practice of phone phreaking became an outdated art. The same goes for wardialing and a lot of the other activities that involved standard telephone lines. Oh how I miss the days when a kid with a MacGyver'd phone could feel like he was a master of the universe.