a way to describe an incident or occurence in life as troublesome, or in many cases, to express a generally fucked up state of living.
imagine the literal "tough shit", it's like a real burning case of the squirts, only as a metaphor for life. most commonly emphasized sarcastically, as to mock the seriousness of the situation.
Bob: I haven't slept in days, there's a terrible rash on my crotch, my car got impounded, some other guy is fucking my girlfriend, and I just lost my job.
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*