In terms of video games, to telegraph is to give advance notice of. A good example is Punch Out. Most fighters do a small animation that shows they are about to attack.
A song from Schoolhouse Rock, which depicts a Civil War-esque delivery boy sending messages and death threats to various people in the song. Telegraph Line is also famously known for having a robot with a lit-up screen being sexually abused by Mr. Hand, mainly in the areas of the foot.
Hey, there's a telegraph line, you got yours and I got mine; it's called the nervous system!!!!!!!!!!!!! And everybody understands, those telegram commands, and you know that everybody better listen!
An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"
Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.
B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.
B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*