F*ck is usually excused if say.. you hurt yourself 'ow f*ck that hurt', especially if you say sorry right after. At least here in canada. Students or even teachers sometimes accidently say a swear in the classroom setting. Kind of like how the canadian french use tabernak.
F*ck has many meanings, theres youtube videos of the many ways to use it. It's probably the most flexible word in the english language hah
Sh*t is also used if you hurt yourself as well as many other meanings, which can be used in combination with f*ck lol. 'That sh*t is f*cking crazy'
chill out, take a chill pill - calm down
what the deuce, what the f*ck, what the hell, what the sh*t - what just happened/what is that?
The internet is growing exponentially, it's getting in the minds of people and language. People are starting to use acrynoms in real settings. My friend says 'lol' when he's laughing, its kind of retarded hah. I sometimes say literally say 'w t f', or 'b r b' with my group of friends. I sometimes notice people do the same thing too between their group of friends