Explicit song lyrics checker
I recommend practicing Python 3 rather than Python 2 these days.

According to PEP 8, isClean() should be is_clean().

One or more of your loops could be replaced by some use of the any() function.  Note that this suggests that an is_explicit() function would be a more natural concept than an is_clean() function.

I would expect song lyrics to contain a mixture of uppercase and lowercase.  Words may be delimited by punctuation as well as spaces.  Therefore, words = line.split(" ") is probably too naïve.  Furthermore, I would expect each song to be short enough to fit entirely in memory very comfortably, so processing each file line by line is an unnecessary complication.

I would rewrite the program to use a regular expression instead.

import re

explicit_words = [
    …
]

is_explicit = re.compile(
    r'\b(?:' +
        '|'.join(re.escape(w) for w in explicit_words) +
    r')\b',
    re.IGNORECASE).search

def main():
    with open(raw_input("Enter path to song: ")) as song:
        print("EXPLICIT" if is_explicit(song.read()) else "CLEAN")

if __name__ == '__main__':
    main()


The way I chose to write the is_explicit() function above might show too much Haskell influence for some Python programmers' taste.  Here's a more conventional way of writing it:

def is_explicit(text):
    return re.search(
        r'\b(?:' +
            '|'.join(re.escape(w) for w in explicit_words) +
        r')\b',
        text,
        re.IGNORECASE
    )