This is from Steve Martin’s Let’s Get Small Album:
“Okay, I don’t like to gear my material to the audience, but I’d like to make an exception because I was told that there is a convention of plumbers in San Francisco this week – and I understand about 30 of them came down to the show tonight – so before I came out I worked-up a joke especially for the plumbers. Those of you who aren’t plumbers probably won’t get this and won’t think it’s funny, but I think those of you who are plumbers will really enjoy this, and uh…. So if you’re not a plumber, please, bear with me for a while and just kinda, you know, hold off on this, but I would like to do this for the plumbers. Here we go.
“This lawn supervisor was out on a sprinkler maintenance job and he started working on a Findlay sprinkler head with a Langstrom 7″ gangly wrench. Well, just then, this little apprentice leaned over and said, “You can’t work on a Findlay sprinkler head with a Langstrom 7″ wrench.” Well this infuriated the supervisor, so he went and got Volume 14 of the Kinsley manual, and he reads to him and says, “The Langstrom 7″ wrench can be used with the Findlay sprocket.” Just then, the little apprentice leaned over and said, “It says sprocket not socket!”
You have to learn the language. Whatever you're interested in. I had Steve Young from Pinball Resource on the phone. I was a noob. I was a split second from asking him what the “switches” were on a Gottlieb The Amazing Spiderman. To this day I’m glad the conversation turned just before I asked.