As a spoilsport and programmer, I have to regretfully inform you that the profanities in questions are not hidden in your contribution of MS Windows. They are lines of commentary attached to the source code. Some examples can be found <a href="http://mjt.nysv.org/w2k_greps/">here</a>. These kinds of commentary are not incorporated into the actual program modules - they are "lost in translation" when the compiler parses the source.
It is generally considered very bad form to include profanities into source commentaries because of situations like this one - you never know who might get a hold of your code, and you can never be sure you have removed all of your jests, quibs, and frustrated rants. Still, programmers are people, too, and I've made a few sardonic comments when I had to debug other people's coding.
The current interest in the profanities is, however, a mystery to me. The more pressing concern should be that by leaking MS Windows source code, even in parts, the system's security could be even more compromised than it already is. A decompiled source code is far less useful to a hacker than an original. No matter what your opinion of Microsoft is, I'm sure that no one wants their system to be hijacked or damaged, so this leakage is not grounds for joy but a reason to shake your head and ask yourself "What were those idiots thinking?".